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Sandisk Extreme PRO Portable SSD with USB4 vs Sandisk Professional PRO-G40 SSD

A

Product A: Sandisk

Extreme PRO Portable SSD with USB4

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B

Product B: Sandisk

Professional PRO-G40 SSD

30 of 63 known

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Every value links to where we found it.

Only differences

ASandisk Extreme PRO Portable SSD with USB4

BSandisk Professional PRO-G40 SSD

General

5 of 9 differ

Series

Not available

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Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

SDSSDE82-2T00-G25, SDSSDE82-4T00-G252Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-extreme-pro-usb-4-portable-ssdRead 14 October 2026SanDisk's own links for the page carry sku=SDSSDE82-2T00-G25 and sku=SDSSDE82-4T00-G25. TechRadar's spec table also reads SDSSDE82-2T00-G25

SDPS31H-001T-GBC1D, SDPS31H-002T-GBC1D, SDPS31H-004T-GBC1D, SDPS31H-001T-GBCND, SDPS31H-002T-GBCND1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Worldwide SKU table: SDPS31H-001T-GBC1D, SDPS31H-002T-GBC1D and SDPS31H-004T-GBC1D. The 2022 launch part numbers SDPS31H-001T-GBCND and SDPS31H-002T-GBCND come from Tom's Hardware's spec table. The sheet also lists China SKUs ending ZBC1D, which are not stored

GTIN / EAN

619659194376, 6196591944069Spec databasecamelcamelcamel.com/product/B0DN6DK3X4Read 14 October 2026Search summary of the 4TB SDSSDE82-4T00-G25 listing gives UPC 619659194406 and retailers list EAN 0619659194406. Search summary of Farnell Ireland's listing for the 2TB SDSSDE82-2T00-G25 gives 0619659194376, which is UPC 619659194376. Both pages block direct fetches. Both codes have valid check digits

619659209599, 619659209568, 6196592096121Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026UPC column for the worldwide SKUs: 6 19659 20959 9 (1TB), 6 19659 20956 8 (2TB) and 6 19659 20961 2 (4TB). Stored as 12-digit UPC. The sheet gives no GTINs for the GBCND launch parts

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

November 20248Press articlechargerlab.com/sandisk-unveils-extreme-pro-usb4-portable-ssd-high-speed-durable-storage-up-to-4tbRead 14 October 2026ChargerLAB article dated 22 November 2024 says SanDisk introduced its first USB4 portable SSD. It gives no ship date or price. Forbes places the announcement in November 2024 alongside other Western Digital flash products, but its page could not be fetched

5 October 20223Press releasewesterndigital.com/de-at/company/newsroom/press-releases/2022/2022-10-05-western-digital-turbocharges-versatility-with-new-sandisk-professional-pro-g40-ssdRead 15 October 2026Western Digital press release dated 2022-10-05, San Jose, California

Status

Available2Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-extreme-pro-usb-4-portable-ssdRead 14 October 2026The page is live for the 2TB and 4TB with a sku selector

Available2Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-professional-pro-g40-ssdRead 15 October 2026The page is live in October 2026 with the three GBC1D SKUs. Amazon US showed the 4TB at rank 51 in External Solid State Drives with 1,098 reviews

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

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SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

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Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$279.993Reviewtomshardware.com/pc-components/external-ssds/sandisk-extreme-pro-with-usb4-2-tb-reviewRead 14 October 2026Spec table price $279 (2TB) and $429 (4TB), which are Amazon prices at review time and not stated as MSRP6Reviewthessdreview.com/hardware/portable-ssds/sandisk-extreme-pro-usb-4-portable-ssd-reviewRead 14 October 2026Review of 3 May 2025 states MSRP $279.99 US for the 2TB and 429.99 US for the 4TB. No maker page states a price7Reviewtechradar.com/pro/sandisk-extreme-pro-with-usb4-reviewRead 14 October 2026Asking price $279.99 (2TB) and $429.99 (4TB) in the US at review time

From $299.991Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 20263Press releasewesterndigital.com/de-at/company/newsroom/press-releases/2022/2022-10-05-western-digital-turbocharges-versatility-with-new-sandisk-professional-pro-g40-ssdRead 15 October 20264Press articlestoragereview.com/review/sandisk-professional-pro-g40-reviewRead 15 October 20265Press articlecomputerbase.de/2022-10/sandisk-professional-externe-pro-g40-ssd-ist-schnell-und-teuerRead 15 October 20266Reviewtomshardware.com/reviews/sandisk-pro-g40-ssd-reviewRead 15 October 20267Measurementtomshardware.com/reviews/sandisk-pro-g40-ssd-review/3Read 15 October 20268Measurementtomshardware.com/reviews/sandisk-pro-g40-ssd-review/2Read 15 October 2026

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

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From €4711Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 20263Press releasewesterndigital.com/de-at/company/newsroom/press-releases/2022/2022-10-05-western-digital-turbocharges-versatility-with-new-sandisk-professional-pro-g40-ssdRead 15 October 20264Press articlestoragereview.com/review/sandisk-professional-pro-g40-reviewRead 15 October 20265Press articlecomputerbase.de/2022-10/sandisk-professional-externe-pro-g40-ssd-ist-schnell-und-teuerRead 15 October 20266Reviewtomshardware.com/reviews/sandisk-pro-g40-ssd-reviewRead 15 October 20267Measurementtomshardware.com/reviews/sandisk-pro-g40-ssd-review/3Read 15 October 20268Measurementtomshardware.com/reviews/sandisk-pro-g40-ssd-review/2Read 15 October 2026

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

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ColoursiThe maker's own colour names

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Black1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Color column reads Black for every SKU

Form factoriPhysical size of the drive. External is any drive in its own case that connects by cable. A drive sold in two M.2 lengths is two products. Xbox expansion card is a card for the storage expansion slot of an Xbox Series console.

External1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdfRead 14 October 2026Form Factor row reads Portable SSD

External1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Portable SSD in a rugged case that connects by a USB-C port, so stored as external

CapacityiNominal capacity before formatting, in decimal GB. A published 1 TB is 1000 GB. A published 1024GB stays 1024. The marketed capacity is stored, not a raw or usable figure from the same table, such as OWC's 2048 GB total and 1920 GB usable for a 2.0TB drive.

2 TB, 4 TB1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdfRead 14 October 2026Available Capacities row reads 2TB and 4TB. Footnote 2 says 1TB equals 1,000,000,000,000 bytes

1 TB, 2 TB, 4 TB1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Capacity column: 1TB, 2TB and 4TB. Footnote: 1 TB = 1 trillion bytes

Interface

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InterfaceiFastest host connection the drive is rated for. The PCIe generation of an NVMe drive is its own field. A Thunderbolt drive that also works over USB uses its Thunderbolt version.

USB41Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdfRead 14 October 2026Interface row reads USB4 Gen 3x2 (40Gb/s). The highlights say the drive supports Thunderbolt 4 hosts and works with older USB 3.2 and USB 2.0 devices

Thunderbolt 31Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Interface row reads Thunderbolt 3 (40Gbps) and SuperSpeed USB 10Gbps (USB 3.2 Gen 2). Stored as the highest mode, Thunderbolt 3

PCIe generationiHighest PCIe generation the drive supports, e.g. 5 for PCIe 5.0. NVMe drives only. A drive rated for PCIe 4.0 x4 or 5.0 x2 is 5 with 2 lanes, and the source note names both modes.

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PCIe lanesiLanes the drive uses at its highest PCIe generation, usually 4. NVMe drives only.

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NVMe versioniVersion of the NVMe specification as published. A revision letter is left out, so 2.0d is stored as 2.0.

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Detachable cableiExternal drives. No means the cable is fixed to the drive.

Yes3Reviewtomshardware.com/pc-components/external-ssds/sandisk-extreme-pro-with-usb4-2-tb-reviewRead 14 October 2026The cable is a separate item in the box and the drive has a USB-C port7Reviewtechradar.com/pro/sandisk-extreme-pro-with-usb4-reviewRead 14 October 2026The cable is separate from the drive. No USB-A adapter is included

Yes6Reviewtomshardware.com/reviews/sandisk-pro-g40-ssd-reviewRead 15 October 2026The drive has a reinforced USB-C port and a Type-C to Type-C cable is in the box

Hardware

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ControlleriController maker and model as named by the maker or a review. On an external drive, the controller of the SSD inside, not the USB or Thunderbolt bridge chip. The bridge chip goes in the source note.

Not available

Sandisk in-house6Reviewtomshardware.com/reviews/sandisk-pro-g40-ssd-reviewRead 15 October 2026Spec table row Controller reads SanDisk Proprietary, written as Sandisk in-house like the Optimus GX PRO 850X. Text: the SSD inside is the SN750E, with the same controller as the WD Red SN700. The review tested the 2022 launch drive. No teardown of a GBC1D drive was found. Bridge chips: Intel Titan Ridge JHL7440 for Thunderbolt 3 and the ASMedia ASM2362 for USB 3.2 Gen 2. TheSSDReview names the same chips9Reviewthessdreview.com/hardware/portable-ssds/sandisk-professional-pro-g40-thunderbolt-3-dual-mode-portable-ssd-review-unbelievable-3-1gb-s-data-transfer-speedsRead 15 October 2026The review could not open the case. It says the drive uses a SanDisk SN750e M.2 SSD with an Intel JHL7440 Thunderbolt 3 controller and an ASMedia ASM2362 USB 3.2 controller

Flash typeiBits stored in each flash cell. TLC stores three and QLC stores four. A maker can use another flash type in some capacities, so it is per variant.

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TLC6Reviewtomshardware.com/reviews/sandisk-pro-g40-ssd-reviewRead 15 October 2026Text: 1TB of 96-layer BiCS4 TLC in two 512GB packages

Flash memoryiFlash maker and generation as named by the maker or a review.

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Sandisk BiCS4 TLC6Reviewtomshardware.com/reviews/sandisk-pro-g40-ssd-reviewRead 15 October 2026Spec table row Memory reads SanDisk 96-Layer BiCS4, the same for 1TB and 2TB. Stored for the base 2TB as the maker for all capacities. Not checked on a GBC1D drive

Flash layersiStacked layers of the 3D flash, from the maker or a review.

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966Reviewtomshardware.com/reviews/sandisk-pro-g40-ssd-reviewRead 15 October 202696 layers from the Memory row

DRAM cacheiDRAM is a memory chip on the drive. HMB is a drive without DRAM that borrows host memory. None has neither. HMB not stated is a drive without DRAM where no source says whether it borrows host memory. An external drive counts when a source names the cache of the drive inside.

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DRAM6Reviewtomshardware.com/reviews/sandisk-pro-g40-ssd-reviewRead 15 October 2026Spec table row DRAM reads DDR4 for both capacities. Text: the drive has DRAM, so no Host Memory Buffer

DRAM cache sizeiSize of the DRAM on the drive. Any DRAM type counts, such as DDR4 or LPDDR4X. Host memory buffer (HMB) is not DRAM on the drive.

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Component sidesiWhether chips sit on one or both sides of the board. Thin laptops and some handhelds need single-sided drives. M.2 drives only. The M.2 module code states it: S is single-sided and D is double-sided, e.g. 2280-S3-M or 2280-D5-M.

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Performance

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Sequential read (claimed)iMaker's up-to sequential read speed for this capacity. Test conditions are in the source note.

3,800MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdfRead 14 October 2026Data Transfer Rates row reads up to 3800MB/s read. Footnote 1: based on internal testing, performance may be lower depending on host device, interface, usage conditions and other factors. 1MB is 1,000,000 bytes. The same figure is given for 2TB and 4TB

3,000MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Data Transfer Rate row, Thunderbolt 3: up to 3000MB/s read. USB-C: up to 1050MB/s read, not stored. Footnote: internal testing, 1 MB/s = 1 million bytes per second, performance may vary by host device, usage conditions and drive capacity. The same figure is given for all three capacities

Sequential write (claimed)iMaker's up-to sequential write speed for this capacity. Makers usually measure it inside the fast write cache.

3,700MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdfRead 14 October 2026Up to 3700MB/s write, same footnote and same figure for 2TB and 4TB

2,500MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Thunderbolt 3: up to 2500MB/s write. USB-C: up to 1000MB/s write, not stored. Same figure for all three capacities

Random 4K read (claimed)iMaker's up-to random read speed with 4 KB blocks. Queue depth and threads are in the source note. The maker's headline claim. Makers test at different queue depths, so compare with care. The queue depth 1 measured fields compare better.

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Random 4K write (claimed)iMaker's up-to random write speed with 4 KB blocks. Queue depth and threads are in the source note. The maker's headline claim. Makers test at different queue depths, so compare with care. The queue depth 1 measured fields compare better.

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Endurance and reliability

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Endurance (TBW)iTerabytes that can be written within the warranty, as the maker rates them.

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MTBF or MTTF (claimed)iMean time between failures, or mean time to failure when the maker publishes MTTF. The source note says which. Some makers state it per capacity, so it is per variant.

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Operating temperatureiMaker's operating range. The storage range is not stored.

Min5Max45°C1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdfRead 14 October 2026Operating Temperature 5 C to 45 C. The storage range of -20 C to 85 C is not stored

Min5Max35°C1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Operating Temperature row: 41 to 95 F | 5 to 35 C

Power

None of 6 known

Power while reading (claimed)iMaker's average power during sequential reads, including a figure given at the full read speed. A single average or active figure with no read and write split, such as Corsair's, is stored in both read and write, and the source note says so. A maximum figure, such as Kingston's (MAX) Read, is a peak and is not stored.

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Power while writing (claimed)iMaker's average power during sequential writes. A single average or active figure with no read and write split is stored in both read and write, and the source note says so. A maximum figure, such as Kingston's (MAX) Write, is a peak and is not stored.

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Max power consumption (claimed)iMaker's peak or maximum power figure. Not the average while reading or writing. Kingston publishes max read and max write power apart. Store the higher one and name both in the source note.

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Average power in light use (claimed)iMaker's average over a mixed client workload such as MobileMark. Not idle power and not read or write power.

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Idle power (claimed)iMaker's idle power in the PS3 state with APST on, or the state the maker calls low-power idle. On a SATA drive, Slumber counts as low-power idle. A plain idle figure with no low-power state, often near 1 W, is active idle and is not stored. Samsung's Idle with DIPM on is a SATA link power state, so it counts as low-power idle.

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Sleep power (claimed)iMaker's power in the deepest sleep state, PS4 or L1.2. On a SATA drive this is DevSleep.

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Measured

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Sequential read (measured)iCrystalDiskMark SEQ1M Q8T1 read result from a reviewer. Host and slot are in the source note. KitGuru's default profile counts as SEQ1M Q8T1.

3,717MB/s4Reviewssd-tester.com/sandisk_extreme_pro_mit_usb4_2tb.htmlRead 14 October 20262TB (SDSSDE82-2T00-G25), tested on 9 February 2026. CrystalDiskMark 7.0 SEQ1M Q8T1 read 3,717.23 MB/s. KitGuru has not reviewed this drive, so another reviewer is used. The test file size and the drive fill are not stated. The site says its tests since 2023 use an AMD Ryzen 9 7900 PC that can test USB4 drives, and it does not name the port. Tom's Hardware printed 3,716.62 MB/s read and 3,710.54 MB/s write in CrystalDiskMark 8 default settings on a Ryzen 7600X system, and TechRadar printed 3,810 and 3,662 MB/s, which agree within 3 percent

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Sequential write (measured)iCrystalDiskMark SEQ1M Q8T1 write result from a reviewer. Host and slot are in the source note.

3,704MB/s4Reviewssd-tester.com/sandisk_extreme_pro_mit_usb4_2tb.htmlRead 14 October 20262TB. CrystalDiskMark SEQ1M Q8T1 write 3,703.80 MB/s, same conditions

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Random 4K read at queue depth 1 (measured)iCrystalDiskMark RND4K Q1T1 read result from a reviewer. Small reads one at a time, close to everyday use. KitGuru's 4K QD1 1 Thread test counts as RND4K Q1T1. A CrystalDiskMark result printed in IOPS is stored as IOPS x 4096 / 1,000,000 MB/s, the way CrystalDiskMark converts.

56.39MB/s4Reviewssd-tester.com/sandisk_extreme_pro_mit_usb4_2tb.htmlRead 14 October 20262TB. CrystalDiskMark RND4K Q1T1 read 56.39 MB/s, printed as 13,766.4 IOPS in the same table. 13,766.4 x 4096 / 1,000,000 gives 56.39

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Random 4K write at queue depth 1 (measured)iCrystalDiskMark RND4K Q1T1 write result from a reviewer. A CrystalDiskMark result printed in IOPS is stored as IOPS x 4096 / 1,000,000 MB/s, the way CrystalDiskMark converts.

19.4MB/s4Reviewssd-tester.com/sandisk_extreme_pro_mit_usb4_2tb.htmlRead 14 October 20262TB. CrystalDiskMark RND4K Q1T1 write 19.40 MB/s, printed as 4,736.3 IOPS. 4,736.3 x 4096 / 1,000,000 gives 19.40. ServeTheHome says the drive sustains 19 MB/second in 4K random writes

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Write cache size (measured)iData written at full speed in one long sequential write on an empty drive before the speed drops.

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Write speed after the cache (measured)iWrite speed in the first state after the fast cache is full, when the drive writes straight to TLC or QLC. Tom's Hardware calls it TLC mode. The slower folding state and the lowest dip are not stored. Only from a long sequential write test.

1,100MB/s3Reviewtomshardware.com/pc-components/external-ssds/sandisk-extreme-pro-with-usb4-2-tb-reviewRead 14 October 20262TB. Iometer sequential write, 1MiB blocks, queue depth 32, 15 minutes. Text says the drive writes just below 3,500 MB/s for almost three minutes, then drops to around 1,100 MB/s for about five minutes, then to around 800 MB/s for the rest. The chart shows the plateau at about 1,150 MB/s. The first drop is stored. The 800 MB/s state is not. Cache size in GB is not printed, so it is not stored. PC Gamer saw a different pattern in its own test

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3DMark Storage BenchmarkiOverall score measured by a reviewer. Host and slot are in the source note. From StorageReview only. Tom's Hardware scores the same drive about 30 percent higher, so other reviewers are not mixed in.

1,370points5Reviewstoragereview.com/review/sandisk-extreme-pro-with-usb4-review-fast-rugged-hugeRead 14 October 20262TB (1862GB exFAT partition). 3DMark Storage Benchmark overall score 1,370, average 229.23 MB/s at 128 microseconds. Test host: AMD Ryzen 7 9800X3D, Asus ROG Crosshair X870E Hero, DDR5-6000, RTX 4090, Windows 11 Pro. The USB port used is not stated

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Highest temperature under load (measured)iHighest drive sensor reading in a sustained write test of 10 minutes or more, on the bare drive unless the row is a heatsink version. Short benchmark runs do not count. Heatsink, airflow and room temperature go in the source note.

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Idle power (measured)iReviewer's idle reading. Power-saving settings such as ASPM are in the source note. A value read from a chart image counts when the source note says "read from chart".

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Cooling and build

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HeatsinkiVersions sold. The base lists every version and each variant row lists its own. A water block or a cooler with a fan counts as a heatsink. A thermal pad or label alone is bare. A heatsink in the box that the buyer fits, as on the XPG MARS 980 BLADE, counts as with heatsink.

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RGB lightingiAny version sold has lighting the user can set. A status LED alone does not count. Leave it out when no version has lighting. The Heatsink rows show which version has it.

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Dust and water ratingiPublished IP rating of an external drive.

IP653Reviewtomshardware.com/pc-components/external-ssds/sandisk-extreme-pro-with-usb4-2-tb-reviewRead 14 October 2026Text says SanDisk states an IP65 rating for water resistance7Reviewtechradar.com/pro/sandisk-extreme-pro-with-usb4-reviewRead 14 October 2026Says SanDisk tested the drive to IEC 60529 IP65, where it withstood water flow (30 kPa) for 3 minutes

IP681Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Key features: high-level IP68 dust/water resistance

Drop test heightiMaker-published tested height. Surface and conditions are in the source note.

2m3Reviewtomshardware.com/pc-components/external-ssds/sandisk-extreme-pro-with-usb4-2-tb-reviewRead 14 October 2026Text says SanDisk says the drive should survive drops up to two meters. The surface is not stated7Reviewtechradar.com/pro/sandisk-extreme-pro-with-usb4-reviewRead 14 October 2026Says the drive can survive a fall of 2 meters, and the claim does not detail what it fell onto

3m1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Key features: up to 3m drop protection, footnote 3 based on internal testing. The surface is not stated in the sheet. The 2022 press release says the drop was onto a carpeted concrete floor3Press releasewesterndigital.com/de-at/company/newsroom/press-releases/2022/2022-10-05-western-digital-turbocharges-versatility-with-new-sandisk-professional-pro-g40-ssdRead 15 October 2026Footnote says the 3m drop was tested on a carpeted concrete floor. Launch speeds in the release were up to 2700MB/s read and 1900MB/s write over Thunderbolt 3

Security and software

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SecurityiFeatures the maker names for the drive. Encryption done by host software does not count. ATA Security passthrough counts as password protection.

AES 256-bit hardware encryption, Password protection6Reviewthessdreview.com/hardware/portable-ssds/sandisk-extreme-pro-usb-4-portable-ssd-reviewRead 14 October 2026States the drive supports hardware encryption. The review gives no key length7Reviewtechradar.com/pro/sandisk-extreme-pro-with-usb4-reviewRead 14 October 2026Spec table Encryption row reads Hardware. Text says the drive supports hardware encryption8Press articlechargerlab.com/sandisk-unveils-extreme-pro-usb4-portable-ssd-high-speed-durable-storage-up-to-4tbRead 14 October 2026Reads 256-bit AES hardware encryption with password protection. No maker document for this model confirms it, and TechRadar and TheSSDReview confirm hardware encryption

Not available

Software

SanDisk Memory Zone8Press articlechargerlab.com/sandisk-unveils-extreme-pro-usb4-portable-ssd-high-speed-durable-storage-up-to-4tbRead 14 October 2026Reads the drive works with the SanDisk Memory Zone app on Android. The page also says drop protection up to 3 meters, which conflicts with the 2 m in SanDisk's product title and is not used

SanDisk SSD Dashboard6Reviewtomshardware.com/reviews/sandisk-pro-g40-ssd-reviewRead 15 October 2026Text: SanDisk also provides its own SSD Dashboard software

Compatibility

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PlatformsiPlatforms the maker names for this drive. A PS5 needs a heatsink on an internal drive. PC is for a maker that writes Client PCs or PC without naming an operating system. Handheld PCs go in Other with a source note.

Windows, macOS, PS5, Xbox Series X|S1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdfRead 14 October 2026System Requirements row reads Windows 10+ | macOS 14+ | Xbox Series X|S | PS5. The Compatibility row names USB Type-C devices such as laptops and tablets without naming an operating system

Windows, macOS1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Operating Systems row: macOS 10.13+ (Time Machine compatible), Windows 10+. The drive ships formatted exFAT, APFS via reformat

Dimensions and weight

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DimensionsiLength is the long side. Height is the thickness, including a fitted heatsink. As the maker publishes it. A maximum counts. Length is the long side even when the maker lists the width first.

Length140Width68.7Height11.9mm(5.5 × 2.7 × 0.5 in)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdfRead 14 October 2026Product Dimensions row reads 5.51 x 2.70 x 0.47 in | 140.00 x 68.70 x 11.90 mm. Tom's Hardware prints 140 x 68.58 x 11.94 mm, which is the same size in inches

Length111Width58Height12mm(4.4 × 2.3 × 0.5 in)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Size (LxWxH) row: 4.36 x 2.28 x 0.47 in | 111 x 58 x 12 mm. The store page prints 4.37 x 2.28 x 0.47 in

WeightiDrive alone, with a heatsink when it is sold fitted. No cable and no packaging. As the maker publishes it. A maximum counts. Not a measured weight.

172g(6.1 oz)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdfRead 14 October 2026Product Weight row reads 0.38 lb | 172 g

122.3g(4.3 oz)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Weight row: 1TB 121.2 g, 2TB 122.3 g and 4TB 123.1 g. Base value is the 2TB model

In the box

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In the box

USB Type-C cable3Reviewtomshardware.com/pc-components/external-ssds/sandisk-extreme-pro-with-usb4-2-tb-reviewRead 14 October 2026Spec table row Included: USB Type-C cable. Text says the box holds the drive, a roughly 11-inch USB-C-to-USB-C cable and paperwork

PRO-G40 SSD, Thunderbolt 3 (40Gbps) Cable, Quick Start Guide1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Box contents row: PRO-G40 SSD, Thunderbolt 3 (40Gbps) Cable and Quick Start Guide

Cables includediCables supplied with an external drive.

ASandisk Extreme PRO Portable SSD with USB4

Type	Length (m)	Count
USB-C to USB-C	0.28	1

Source3Reviewtomshardware.com/pc-components/external-ssds/sandisk-extreme-pro-with-usb4-2-tb-reviewRead 14 October 2026Roughly 11-inch USB-C-to-USB-C cable, which is about 28 cm. TechRadar says the cable is 28cm long and TheSSDReview says 12 inches6Reviewthessdreview.com/hardware/portable-ssds/sandisk-extreme-pro-usb-4-portable-ssd-reviewRead 14 October 202612-inch USB4 Type-C to Type-C cable that also powers the drive7Reviewtechradar.com/pro/sandisk-extreme-pro-with-usb4-reviewRead 14 October 2026The 28cm long USB-C cable is the only accessory

BSandisk Professional PRO-G40 SSD

Type	Length (m)	Count
USB-C to USB-C	0.2	1

Source6Reviewtomshardware.com/reviews/sandisk-pro-g40-ssd-reviewRead 15 October 2026Text: a relatively short 20cm (about 8 inch) USB Type-C to Type-C cable. TheSSDReview also says 20cm / 8 inch9Reviewthessdreview.com/hardware/portable-ssds/sandisk-professional-pro-g40-thunderbolt-3-dual-mode-portable-ssd-review-unbelievable-3-1gb-s-data-transfer-speedsRead 15 October 2026Comes with a 20cm / 8 inch Thunderbolt 3 cable

Links

Not compared

Product page

www.sandisk.com/products/ssd/external-ssd/sandisk-extreme-pro-usb-4-portable-ssd2Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-extreme-pro-usb-4-portable-ssdRead 14 October 2026The SanDisk product page loads its content with scripts, so only its title (2TB SanDisk Extreme PRO with USB4) could be read. The data sheet and reviews carry the specs

www.sandisk.com/products/ssd/external-ssd/sandisk-professional-pro-g40-ssd2Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-professional-pro-g40-ssdRead 15 October 2026SanDisk US product page for the PRO-G40 SSD with a capacity picker for 1TB, 2TB and 4TB. Its spec table repeats the data sheet: up to 3000MB/s read and 2500MB/s write, Thunderbolt 3 and USB 3.2 Gen 2, 5-year limited warranty and the GBC1D part numbers

Spec sheet

documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdf1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdfRead 14 October 2026Two-page SanDisk data sheet for the Extreme PRO with USB4, copyright 2024, hosted on documents.sandisk.com

documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdf1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 2026Two-page SanDisk data sheet for the PRO-G40 SSD, PDF created 2023-12-01, on documents.sandisk.com. It lists 1TB, 2TB and 4TB with the GBC1D part numbers

Manual

Not available

Not available

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

5years1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/extreme-pro-usb-4-portable-ssd/data-sheet-sandisk-extreme-pro-usb-4-portable-ssd.pdfRead 14 October 20265 year limited warranty. The data sheet names no market and points to sandisk.com/wug for terms

5years1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdfRead 15 October 20265 YR limited warranty. The sheet points to sandisk.com/wug for terms and names no market

Both are also in the API. Back to all SSDs.