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Sandisk Optimus GX C50 Storage Expansion Card for Xbox

SandiskSSD

Optimus GX C50 Storage Expansion Card for Xbox

Released June 2023.4Maker product pagesandisk.com/products/ssd/external-ssd/wd-black-c50-expansion-card-for-xbox-ssdRead 14 October 2026Sandisk's page for the WD_BLACK C50 says the WD_BLACK C50 Storage Expansion Card is now the SANDISK Optimus GX C50 SSD Storage Expansion Card for XBOX. It lists 512GB, 1TB and 2TB. The launch evidence of the WD_BLACK C50 is used, as for the other Optimus drives Last checked 21 October 2026.

Interface
PCIe NVMe
Form factor
Xbox expansion card
Capacity
512 GB, 1 TB, 2 TB
Read speed
Not available

19 of 63 fields known.

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All specs

SourceCalculated

General

Series
Optimus GX1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Maker line name is SANDISK Optimus GX, model C50
Model numbers
SDCEOGN-512G-GNAGX, SDCEOGN-1T00-GNAGX, SDCEOGN-2T00-GNAGX1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Specifications rows and the Model Numbers list: SDCEOGN-512G-GNAGX, SDCEOGN-1T00-GNAGX and SDCEOGN-2T00-GNAGX. Sandisk lists one model number per capacity
GTIN / EAN
619659234454, 619659234447, 6196592344231Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026The page's product data lists UPC 619659234454 for the 512GB, 619659234447 for the 1TB and 619659234423 for the 2TB9Retailer pageamazon.com/Sandisk-Optimus-Storage-Expansion-Card/dp/B0H8XY7QWYRead 14 October 2026UPC 619659234447 for the 1TB, the same as on the Sandisk page. The page also gives weight 27.22 g and PCI Express x4, which differ from the maker and are not stored
Announced
7 June 20234Maker product pagesandisk.com/products/ssd/external-ssd/wd-black-c50-expansion-card-for-xbox-ssdRead 14 October 2026WD_BLACK C50 unveiled and on sale on 7 June 2023. Sandisk revealed the Optimus GX C50 name in August 20265Press articlestoragereview.com/news/wd_black-c50-expansion-card-now-availableRead 14 October 2026Article dated June 7, 2023 says WD_BLACK has unveiled the C50
Status
Available6Press articletomshardware.com/pc-components/external-ssds/sandisk-expansion-cards-for-xbox-series-x-s-now-available-on-amazon-alternative-storage-solution-to-seagate-wd-arrives-on-the-market-five-years-after-the-launch-of-the-consolesRead 14 October 2026Article of 21 August 2026 says the Optimus GX C50 is on Amazon, from $249.99 for the 1TB9Retailer pageamazon.com/Sandisk-Optimus-Storage-Expansion-Card/dp/B0H8XY7QWYRead 14 October 2026Amazon US listing for the 1TB, SDCEOGN-1T00-GNAGX, shows In Stock on 2026-10-14, rank 7 in External Solid State Drives and 1K+ bought
Predecessor
Not available
Successor
Not available
Launch price (US)
Not available
Launch price (EU)
Not available
Markets
Not available
Colours
Black9Retailer pageamazon.com/Sandisk-Optimus-Storage-Expansion-Card/dp/B0H8XY7QWYRead 14 October 2026Color attribute reads Black
Form factor
Xbox expansion card1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026The page sells it as a Storage Expansion Card for XBOX Series X|S, and the Interface row reads XBOX Expansion Slot2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Form factor row reads NVMe SSD and the Interface row reads XBOX Storage Expansion Slot, so the Xbox expansion card option fits
Capacity
512 GB, 1 TB, 2 TB1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Capacity rows 512GB, 1TB and 2TB. Footnote: 1GB = 1 billion bytes and 1TB = 1 trillion bytes2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Capacities 512GB, 1TB and 2TB. Footnote: 1GB = 1 billion bytes and 1TB = 1 trillion bytes

Interface

Interface
PCIe NVMe1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Interface row reads XBOX Expansion Slot, which is no option of the Interface field. The page says the card has a super speed NVMe core, so PCIe NVMe is stored. Sandisk names no PCIe generation or lane count2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Interface XBOX Storage Expansion Slot. The card is an NVMe SSD, so PCIe NVMe is stored8Press articlebasic-tutorials.com/news/sandisk-optimus-gx-c50-new-xbox-series-x-storage-expansion-with-up-to-2-tbRead 14 October 2026Says the card uses an NVMe core internally and connects through the Xbox expansion slot. It quotes PCIe 4.0 x2 from a retailer, which is not stored because other listings differ
PCIe generation
45Press articlestoragereview.com/news/wd_black-c50-expansion-card-now-availableRead 14 October 2026Article of 7 June 2023 on the WD_BLACK C50 says the Xbox expansion slot, which the card plugs into, works as a high-speed NVMe Gen4 x2 port. Sandisk's Optimus pages and data sheet name no PCIe generation and give the form factor as NVMe SSD. The link is set by the slot, so Gen 4 is stored
PCIe lanes
25Press articlestoragereview.com/news/wd_black-c50-expansion-card-now-availableRead 14 October 2026Same article, Gen4 x2 port. The Sandisk pages and data sheet name no lane count. Amazon US lists the card as PCI Express x4, which is a catalog label and is not used
NVMe version
Not available
Detachable cable
Not available

Hardware

We could not find any of these 7 fields. Show them
Controller
Not available
Flash type
Not available
Flash memory
Not available
Flash layers
Not available
DRAM cache
Not available
DRAM cache size
Not available
Component sides
Not available

Performance

We could not find any of these 4 fields. Show them
Sequential read (claimed)
Not available
Sequential write (claimed)
Not available
Random 4K read (claimed)
Not available
Random 4K write (claimed)
Not available

Endurance and reliability

Endurance (TBW)
Not available
MTBF or MTTF (claimed)
Not available
Operating temperature
Min0Max45°C2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Product Specifications, Environmental: Operating Temperature 32 F to 113 F (0 C to 45 C). Non-operating -20 C to 85 C is not stored. The former WD_BLACK C50 sheet said -5 C to 55 C. The Optimus data sheet is the maker's document for this exact model, so its range is stored

Power

We could not find any of these 6 fields. Show them
Power while reading (claimed)
Not available
Power while writing (claimed)
Not available
Max power consumption (claimed)
Not available
Average power in light use (claimed)
Not available
Idle power (claimed)
Not available
Sleep power (claimed)
Not available

Measured

We could not find any of these 9 fields. Show them
Sequential read (measured)
Not available
Sequential write (measured)
Not available
Random 4K read at queue depth 1 (measured)
Not available
Random 4K write at queue depth 1 (measured)
Not available
Write cache size (measured)
Not available
Write speed after the cache (measured)
Not available
3DMark Storage Benchmark
Not available
Highest temperature under load (measured)
Not available
Idle power (measured)
Not available

Cooling and build

We could not find any of these 4 fields. Show them
Heatsink
Not available
RGB lighting
Not available
Dust and water rating
Not available
Drop test height
Not available

Security and software

We could not find any of these 2 fields. Show them
Security
Not available
Software
Not available

Compatibility

Platforms
Xbox Series X|S1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Compatibility rows: XBOX Series S Console and XBOX Series X Console2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Device compatibility: XBOX Series S console, XBOX Series X console

Dimensions and weight

Front and side, drawn to scale.

Dimensions
Length55.4Width31.6Height7.7mm(2.2 × 1.2 × 0.3 in)2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Size 2.18 x 1.24 x 0.3 in | 55.4 x 31.6 x 7.7 mm. The WD_BLACK C50 sheet gave 55.6 mm for the length3Maker product pagesandisk.com/en-gb/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Dimensions (L x W x H) 55.4mm x 31.6mm x 7.7mm. The US page gives 2.18 x 1.24 x 0.3 inches, which agrees
Weight
25g(0.9 oz)1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Weight row reads 25gms2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Weight 0.055 lb | 25.0 g3Maker product pagesandisk.com/en-gb/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 202625gms

In the box

In the box
SANDISK Optimus GX C50 Storage Expansion Card for XBOX Series X|S1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026In The Box row lists the card only. The Xbox Game Pass Ultimate and Discord Nitro trials are offers, not box items on this page
Cables included
Not available

Warranty

Manufacturer warranty (source market)
5years1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 20265-Year Limited Warranty. The page names no market2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Limited warranty 5-Year, footnote points to sandisk.com/wug for details3Maker product pagesandisk.com/en-gb/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 20265-Year Limited Warranty

Compare with

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Variants

Each variant lists only what differs from the specs above.

Model numberGTINCapacity
SDCEOGN-512G-GNAGX619659234454512 GB
SDCEOGN-1T00-GNAGX6196592344471 TB
SDCEOGN-2T00-GNAGX6196592344232 TB

Sources

We read 9 sources for this SSD. The numbers match the markers in the sheet.

  1. Read 14 October 2026Backs 12 fields
  2. Read 21 October 2026Backs 9 fields
  3. Read 14 October 2026Backs 3 fields
  4. Read 14 October 2026Backs 2 fields
  5. Read 14 October 2026Backs 4 fields
  6. Read 14 October 2026Backs 2 fields
  7. Read 14 October 2026Backs 1 field
  8. Read 14 October 2026Backs 2 fields
  9. Read 14 October 2026Backs 3 fields

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