Zenbook S UX391
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UX391FA
Model
UX391FA
Color
Deep Dive Blue
Operating System
Windows 10 Home - ASUS recommends Windows 10 Pro for business
Free Upgrade to Windows 11¹ (when available, see below)
Windows 10 Pro - ASUS recommends Windows 10 Pro for business
Processor
Intel® Core™ i7-8565U Processor 1.8 GHz (8M Cache, up to 4.6 GHz, 4 cores)
Intel® Core™ i5-8265U Processor 1.6 GHz (6M Cache, up to 3.9 GHz, 4 cores)
Graphics
Intel® UHD Graphics 620
Display
13.3-inch, 4K UHD (3840 x 2160) 16:9 aspect ratio, IPS-level Panel, LED Backlit, 60Hz refresh rate, 350nits, 100% sRGB color gamut, Glossy display, Touch screen, With stylus support
13.3-inch, FHD (1920 x 1080) 16:9 aspect ratio, IPS-level Panel, LED Backlit, 60Hz refresh rate, 450nits, 100% sRGB color gamut, Anti-glare display, Non-touch screen, With stylus support
13.3-inch, FHD (1920 x 1080) 16:9 aspect ratio, IPS-level Panel, LED Backlit, 60Hz refresh rate, 300nits, 100% sRGB color gamut, Glossy display, Touch screen, With stylus support
Memory
16GB LPDDR3 on board
Max Total system memory up to:16GB
8GB LPDDR3 on board
Max Total system memory up to:16GB
Storage
512GB M.2 NVMe™ PCIe® 3.0 SSD
512GB M.2 NVMe™ PCIe® 3.0 Performance SSD
1TB M.2 NVMe™ PCIe® 3.0 Performance SSD
256GB 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 with support for display / power delivery (data speed up to 5Gbps)
2x Thunderbolt™ 3 with support for display / power delivery (data speed up to 40Gbps)
1x 3.5mm Combo Audio Jack
Keyboard & Touchpad
Backlit Chiclet Keyboard, 1.4mm Key-travel, Touchpad
Camera
720p HD camera
Audio
SonicMaster
Built-in speaker
Built-in array microphone
harman/kardon (Premium)
with Cortana voice-recognition support
Network and Communication
Wi-Fi 5(802.11ac) (Dual band) 2*2 + Bluetooth® 5.1 Wireless Card (*Bluetooth® version may change with OS version different.)
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
1.05 kg (2.31 lbs)
1.00 kg (2.20 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.
Microsoft 365 Personal 1-year included.*
*Activation required with 6-months of Windows activation date.
Military Grade
US MIL-STD 810G military-grade standard
Ecolabels & Compliances
Energy star
Security
Trusted Platform Module (Firmware TPM)
Fingerprint sensor integrated with Touchpad
Included in the Box
Sleeve
Stylus (ASUS Pen SA200H-MPP1.51 support)
ASUS Mini Dock
USB-C to HDMI adapter
USB-C to USB-A adapter
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)