Support

Zenbook S UX391

Color

Deep Dive Blue

Operating System

Windows 10 Home - ASUS recommends Windows 10 Pro for business
Windows 10 Pro - ASUS recommends Windows 10 Pro for business
Free Upgrade to Windows 11¹ (when available, see below)

Processor

Intel® Core™ i7-8550U Processor 1.8 GHz (8M Cache, up to 4.0 GHz, 4 cores)
Intel® Core™ i5-8250U Processor 1.6 GHz (6M Cache, up to 3.4 GHz, 4 cores)
Intel® Core™ i5-8265U Processor 1.6 GHz (6M Cache, up to 3.9 GHz, 4 cores)
Intel® Core™ i7-8565U Processor 1.8 GHz (8M Cache, up to 4.6 GHz, 4 cores)

Graphics

Intel® UHD Graphics 620

Display

13.3-inch, FHD (1920 x 1080) 16:9 aspect ratio, IPS-level Panel, LED Backlit, 300nits, 100% sRGB color gamut, Anti-glare display
13.3-inch, 4K UHD (3840 x 2160) 16:9 aspect ratio, IPS-level Panel, LED Backlit, 300nits, 100% sRGB color gamut, Glossy display, Touch screen
13.3-inch, 4K UHD (3840 x 2160) 16:9 aspect ratio, IPS-level Panel, LED Backlit, 350nits, 100% sRGB color gamut, Glossy display, Touch screen
13.3-inch, FHD (1920 x 1080) 16:9 aspect ratio, IPS-level Panel, LED Backlit, 300nits, 100% sRGB color gamut, Glossy display
13.3-inch, 4K UHD (3840 x 2160) 16:9 aspect ratio, IPS-level Panel, LED Backlit, 350nits, 100% sRGB color gamut for non-OLED, Glossy display, Touch screen
13.3-inch, FHD (1920 x 1080) 16:9 aspect ratio, IPS-level Panel, LED Backlit, 450nits, 100% sRGB color gamut, Anti-glare display, With stylus support, Screen-to-body ratio: 90%
13.3-inch, 4K UHD (3840 x 2160) 16:9 aspect ratio, IPS-level Panel, LED Backlit, 350nits, 100% sRGB color gamut, Glossy display, Touch screen, With stylus support, Screen-to-body ratio: 90%
13.3-inch, FHD (1920 x 1080) 16:9 aspect ratio, IPS-level Panel, LED Backlit, 300nits, 100% sRGB color gamut, Glossy display, Touch screen, With stylus support, Screen-to-body ratio: 90%

Memory

16GB LPDDR3 on board
8GB LPDDR3 on board
8GB LPDDR3 on board, Total system memory upgradeable to:16GB
16GB LPDDR3 on board, Total system memory upgradeable to:16GB

Storage

512GB M.2 NVMe™ PCIe® 3.0 Performance SSD
256GB M.2 SATA SSD
1TB M.2 NVMe™ PCIe® 3.0 Performance SSD
256GB M.2 NVMe™ PCIe® 3.0 SSD
512GB M.2 NVMe™ PCIe® 3.0 SSD

Expansion Slots (includes used)

1x M.2 2280 PCIe 3.0x2
1x M.2 2280 PCIe 3.0x4

I/O Ports

1x USB 3.2 Gen 1 Type-C support display / power delivery
2x USB 3.2 Gen 2 Type-C support display / power delivery
2x Thunderbolt™ 3 supports display / power delivery
1 x Thunderbolt
1x 3.5mm Combo Audio Jack

Keyboard & Touchpad

Backlit Chiclet Keyboard
Backlit Chiclet Keyboard, 1.4mm Key-travel

Camera

720p HD camera

Audio

harman/kardon
SonicMaster
Built-in speaker
Built-in array microphone
harman/kardon (Premium)
with Cortana and Alexa voice-recognition support

Network and Communication

Wi-Fi 5(802.11ac) (Dual band) 2*2 + Bluetooth 4.2
Wi-Fi 5(802.11ac) (Dual band) 2*2 + Bluetooth 5.0

Battery

50WHrs, 2S2P, 4-cell Li-ion

Power Supply

TYPE-C, 65W AC Adapter, Output: 19V DC, 3.42A, 65W, Input: 100~240V AC 50/60Hz universal

Weight

1.00 kg (2.20 lbs)
1.05 kg (2.31 lbs)

Dimensions (W x D x H)

31.10 x 21.30 x 1.29 ~ 1.29 cm (12.24" x 8.39" x 0.51" ~ 0.51")

Built-in Apps

McAfee
MyASUS

MyASUS Features

System diagnosis
Fan Profile
Splendid
Tru2Life
WiFi SmartConnect
Link to MyASUS

Microsoft Office

1-month trial for new Microsoft 365 customers. Credit card required. 
WPS Office 30 days trial version
Office Home and Student 2019 included
WPS Office Standard Edition (With license for 3 products)
Microsoft Office Home & Business 2016
Microsoft 365 Personal 1-year included.*
*Activation required with 6-months of Windows activation date.

Military Grade

US MIL-STD 810G military-grade standard

Regulatory Compliance

Energy star

Security

Trusted Platform Module (Firmware TPM)
Fingerprint sensor intergrated with Touchpad

Included in the Box

ASUS Mini Dock
USB-C to USB-A adapter
Sleeve
USB-C to HDMI adapter
Stylus

Disclaimer

¹The Windows 11 upgrade will be delivered to qualifying devices late 2021 into 2022. Timing will vary by device. Certain features require specific hardware (see aka.ms/windows11-spec)