Computers / Laptops

ASUSUltrabook laptop

Zenbook DUO (2026) UX8407AA-DS99T

Released April 2026.3 Last checked 13 October 2026.

Screen size: 14in
Processor: Intel Core Ultra 9 386H
GPU: Intel Graphics
Weight (published): 1.65kg

81 of 179 fields known.

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At a glance

Battery
99Wh1
Higher than 92% of other laptops.

Ports

2 USB-C Thunderbolt 4
USB-A USB 3.2 Gen 2
HDMI 2.1 FRL
3.5 mm audio

All specs

SourceCalculatedHide missing

General

Series: Zenbook2
Model numbers: UX8407AA-DS99T1
GTIN / EAN: Not available
Announced: 7 January 20264
Status: Available5
Predecessor: Not available
Successor: Not available
Launch price (US): $2,499.993
Launch price (EU): Not available
Markets: US3
Colours: Moher Gray1
Segment: Ultrabook2
Form factor: Dual screen2

Chassis

Front and side, drawn to scale.

Dimensions: Width310.1Depth208.6Thickness (min)19.6Thickness (max)23.4mm(12.2 × 8.2 × 0.8 to 0.9 in)1
Weight (published): 1.65kg(3.6 lb)1
Lid material: Other2
Bottom material: Other2
Max hinge angle: Not available
MIL-STD-810 testing (claimed): Yes1

Display

Screen size: 14in(35.6 cm)1
Native resolution: 2880 × 1800px1
Pixel density: 242.6ppi
Panel type: OLED1
Backlight: None (self-emissive)1
Dimming zones: Not available
Panel part number: Not available
Screen surface: Not available
Touchscreen: Yes1
Stylus: Included1
Refresh rate modes: Width (px) Height (px) Maximum operating refresh (Hz) VRR
2880 1800 144 Yes
Source1
Max refresh rate: 144Hz
Adaptive sync: Not available
Gray-to-gray response time (claimed): Not available
Native panel colour depth: Not available
Brightness (SDR, claimed): 500nits1
Peak brightness (SDR outdoors, claimed): Not available
Sustained brightness (HDR, claimed): Not available
Peak brightness (HDR, claimed): 1,000nits1
sRGB coverage (claimed): Not available
DCI-P3 coverage (claimed): 100%1
Adobe RGB coverage (claimed): Not available
HDR certification: DisplayHDR True Black 10001
Factory calibrated: Not available
Second display: Screen size14 inResolution2880 × 1800 pxTouchscreenYes1

Width (px)	Height (px)	Maximum operating refresh (Hz)	VRR
2880	1800	144	Yes

Processor

Processor: Intel Core Ultra 9 386H1
Processor brand: Intel1
Core configuration: Core type Count Base clock (GHz) Max clock (GHz)
Performance 4 2.1 4.9
Efficiency 8 1.6 3.7
Low-power efficiency 4 1.6 3.5
Source6
CPU cores: 16
Cores labelled performance: 4
Cores labelled efficiency: 12
Threads: 166
Max boost clock: 4.9GHz
L3 cache: 18MB6
Process: Not available
Sustained CPU power (configured): 45W2
Peak CPU power (configured): Not available
Combined CPU and GPU power: Not available
NPU performance: 50TOPS1

Core type	Count	Base clock (GHz)	Max clock (GHz)
Performance	4	2.1	4.9
Efficiency	8	1.6	3.7
Low-power efficiency	4	1.6	3.5

Graphics

Discrete GPU: No1
GPU: Not available
GPU brand: Not available
VRAM: Not available
Max GPU power (TGP): Not available
Dynamic Boost: Not available
GPU boost clock: Not available
GPU switching: Not available
Integrated GPU: Intel Graphics1

Memory

Installed RAM: 32GB1
RAM type: LPDDR5X1
RAM speed: Not available
Memory channels: Not available
RAM upgrade: Soldered1
Memory slots: Not available
RAM slots: Not available
Free RAM slots: Not available
Maximum supported RAM: 32GB1

Storage

Installed storage: 1TB1
Storage type: NVMe SSD1
Installed drive PCIe generation: 41
Storage slots: Form factor Interface PCIe generation PCIe lanes Count Occupied
M.2 2280 PCIe NVMe 4 4 1 Yes
Source1
M.2 slots: 1
Free storage slots: 0
Maximum slot PCIe generation: 4

Form factor	Interface	PCIe generation	PCIe lanes	Count	Occupied
M.2 2280	PCIe NVMe	4	4	1	Yes

Ports

Ports: Type Version Count Maximum data rate (Gbps) Thunderbolt or USB4 DP Alt Mode
USB-C Thunderbolt 4 2 40 Thunderbolt 4 Yes
USB-A USB 3.2 Gen 2 1 10 Not available Not available
HDMI HDMI 2.1 FRL 1 Not available Not available Not available
3.5 mm audio Not available 1 Not available Not available Not available
Source1
USB-C ports: 2
Thunderbolt: Yes
Highest HDMI version: HDMI 2.1 FRL
Card reader: No
Ethernet speed: Not available
Maximum USB-C charging input: Not available

Type	Version	Count	Maximum data rate (Gbps)	Thunderbolt or USB4	DP Alt Mode
USB-C	Thunderbolt 4	2	40	Thunderbolt 4	Yes
USB-A	USB 3.2 Gen 2	1	10	Not available	Not available
HDMI	HDMI 2.1 FRL	1	Not available	Not available	Not available
3.5 mm audio	Not available	1	Not available	Not available	Not available

Wireless

Wi-Fi: Wi-Fi 71
Wi-Fi bands: 2.4 GHz, 5 GHz, 6 GHz1
Wi-Fi module: Not available
Bluetooth: 5.41
Cellular: Not available

Keyboard and touchpad

Keyboard layouts: Not available
Key switches: Not available
Keyboard backlight: Backlit, type not stated1
Numpad: Not available
Key travel: 1.7mm1
Pointing stick: Not available
Touchpad size: Width127Height79mm(5 × 3.1 in)2
Touchpad mechanism: Not available

Camera and audio

Webcam: FHD1
IR face login: Yes1
Webcam privacy: Not available
Built-in speaker drivers: 61
Total speaker power: Not available
Audio features: Dolby Atmos, Smart Amp Technology1
Microphones: Not available

Battery and power

Battery energy: 99Wh1
Claimed battery life: Use case Hours (h)
Video playback 32
Web browsing 18
Source2
Adapter rated output: 100W1
Laptop charging connector: USB-C1
Charge 0 to 50 % (claimed): Not available

Use case	Hours (h)
Video playback	32
Web browsing	18

Cooling

We could not find any of these 4 fields. Show them

Fans: Not available
Vapor chamber: Not available
Liquid metal: Not available
Power modes: Not available

Security

We could not find any of these 4 fields. Show them

Fingerprint: Not available
TPM: Not available
Remote management: Not available
Security lock slot: Not available

Software

Operating system: Windows 11 Home1
OS family: Windows1
Security updates until: Not available

Measured display

We could not find any of these 12 fields. Show them

Brightness (measured, centre): Not available
Brightness (measured, average): Not available
Contrast ratio (measured): Not available
HDR peak brightness (measured): Not available
sRGB coverage (measured): Not available
DCI-P3 coverage (measured): Not available
Colour accuracy (measured Delta E): Not available
PWM flicker found: Not available
PWM frequency (measured): Not available
PWM at or below brightness: Not available
Response black to white (measured): Not available
Response grey to grey (measured): Not available

Measured performance

We could not find any of these 8 fields. Show them

Cinebench 2024 single-core: Not available
Cinebench 2024 multi-core: Not available
Geekbench 6 single-core: Not available
Geekbench 6 multi-core: Not available
3DMark Time Spy graphics: Not available
3DMark Steel Nomad: Not available
SSD sequential read (measured): Not available
Game frame rates: Not available

Measured noise and temperature

We could not find any of these 9 fields. Show them

Fan noise per mode: Not available
Max fan noise: Not available
Fan noise while gaming: Not available
Top surface under load: Not available
Bottom surface under load: Not available
Palm rest under load: Not available
CPU temperature in stress test: Not available
CPU clock in stress test: Not available
GPU temperature while gaming: Not available

Measured battery and power

We could not find any of these 10 fields. Show them

Battery runtime per test: Not available
Wi-Fi browsing runtime: Not available
Video runtime: Not available
Full charge time (measured): Not available
Power draw idle: Not available
Power draw gaming: Not available
Power draw max: Not available
Sustained CPU power (measured): Not available
GPU power while gaming (measured): Not available
Weight (measured): Not available

Certifications

Intel Evo: Not available
Copilot+ PC: Yes1
Colour certifications: Pantone Validated1
ENERGY STAR: Yes1
EPEAT: Not available
Other certifications: RoHS, Dolby Vision (displays)3

In the box

In the box: ASUS Pen 3.0 stylus with wireless charger, ASUS Zenbook laptop sleeve3
Power adapter included: Not available

Warranty

Manufacturer warranty (source market): 1year5
Warranty service: Not available

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Sources

We read 6 sources for this laptop. The numbers match the markers in the sheet.

Maker product pageasus.com/us/laptops/for-home/zenbook/asus-zenbook-duo-ux8407/techspec
Read 13 October 2026Backs 49 fields
Maker product pageasus.com/us/laptops/for-home/zenbook/asus-zenbook-duo-ux8407
Read 13 October 2026Backs 9 fields
Press releaseasus.com/us/news/the-all-new-zenbook-duo-is-now-available-for-pre-order-in-the-united-states
Read 13 October 2026Backs 5 fields
Press releasepress.asus.com/news/press-releases/asus-zenbook-duo-2026
Read 13 October 2026Backs 1 field
Maker product pageeshop.asus.com/us/90nb16v1-m00j80-asus-zenbook-duo-ux8407-copilot-pc.html
Read 13 October 2026Backs 2 fields
Maker product pageintel.com/content/www/us/en/products/sku/245529/intel-core-ultra-9-processor-386h-18m-cache-up-to-4-90-ghz/specifications.html
Read 13 October 2026Backs 3 fields

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At a glance

Battery

Ports

All specs

General

Chassis

Display

Processor

Graphics

Memory

Storage

Ports

Wireless

Keyboard and touchpad

Camera and audio

Battery and power

Cooling

Security

Software

Measured display

Measured performance

Measured noise and temperature

Measured battery and power

Certifications

In the box

Warranty

Links

Compare with

Sources