ASUS recommends Windows 10 Pro.

    ASUS ZenBook S UX391FA

    ZenBook S UX391FA
    Finish / Color

    ZenBook S UX391FA

    Deep Dive Blue

    Operation System

    Windows 10 Pro
    (ASUS recommends Windows 10 Pro)

    Windows 10 Home


    Intel® Core™ i7-8565U processor

    1.8GHz Quad-core with Turbo Boost (up to 4.6GHz) and 8MB cache

    Intel® Core™ i5-8265U processor

    1.6GHz Quad-core with Turbo Boost (up to 3.9GHz) and 6MB cache


    Integrated Intel® UMA Graphics


    13.3” LED-backlit 4K UHD (3840 x 2160) 16:9 glossy touchscreen

    13.3” LED-backlit Full HD (1920 x 1080) 16:9 glossy screen

    13.3” LED-backlit Full HD (1920 x 1080) 16:9 anti-glare screen

    5.9mm-thin bezel with 85% screen-to-body ratio

    Wide 100% sRGB color gamut

    178° wide-view technology

    ASUS Eye Care technology for up to 30% blue-light reduction


    8GB / 16GB 2133MHz LPDDR3 onboard


    1TB / 512GB / 256GB PCIe® SSD


    2 x Type-C™ USB 3.1 Gen 2 (Thunderbolt™)

    1 x Type-C™ USB 3.1 Gen 2

    All three ports support fast charging, data transfers and display connectivity.

    Thunderbolt™ 3 USB-C™ USB 3.1 Gen 2 Type-C™ Audio combo jack
    Keyboard and Touchpad


    Full-size backlit, with 1.2mm key travel


    Glass-covered with integrated fingerprint sensor supporting Windows Hello; intelligent palm-rejection

    Precision Touchpad (PTP) technology supports up to four-finger smart gestures

    Keyboard Touchpad Fingerprint

    ASUS SonicMaster stereo audio system with surround-sound; smart amplifier for maximum audio performance

    Array microphone with Cortana and Alexa1 voice-recognition support

    3.5mm headphone jack

    Long-travel voice coils for improved low-frequency response

    Certified by Harman Kardon


    HD webcam

    Wireless Connectivity


    Dual-band 802.11ac gigabit-class Wi-Fi


    Bluetooth 5.0

    Battery and Power

    Up to 19.4 hours battery2

    50Wh 4-cell lithium-polymer battery

    65W power adapter
    Plug Type: Type-C
    (Output: 19V DC, 65W)
    (Input: 100-240V AC, 50/60Hz universal)

    Weight and Dimensions

    Height: 1.29cm (0.51 inches)

    Width: 31.1cm (12.24 inches)

    Depth: 21.3cm (8.39 inches)

    With anti-glare display: Approx. 1kg (2.20 pounds)
    With glossy display: Approx. 1.05kg (2.31 pounds)

    31.1 cm
    (12.24 inches)
    21.3 cm
    (8.39 inches)
    1.29 cm
    (0.51 inches)
    Included in the Box

    ZenBook S (UX391)

    Protective sleeve

    USB-C™ power adaptor (65W)

    ASUS Mini Dock
    (or USB-C™ to USB-A dongle and USB-C™ to HDMI dongle)

    ASUS Pen (optional)

    Included Software

    ASUS Battery Health Charging

    ASUS Splendid

    Quiet Fan

    • Amazon Alexa support varies according to country and territory. Please check with your local ASUS retailer for details.
    • Battery life test configuration: Intel® Core™ i5-8265U, 8GB RAM, Full HD non touch display, 256GB PCIe® G3*2 SSD. Battery tests conducted by ASUS in December 2018 using the Intel Battery Life Measurements(Rev 1.0)-Local Video Playback Scenario. Test settings: Wi-Fi disabled, display brightness set to 150 nits, with headphone plugged in. Actual battery life may vary depending on product configuration, usage, operational conditions and power management settings. Battery life will decrease over the lifetime of the battery.
    • Weights may vary according differ by to product specifications.