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ASUS ZENBOOK S UX391UA-XB74T Notebook | Intel Core i7-8550U (4.0GHz) | 16GB LPDDR3 | Intel HD Graphics | 512GB SSD | 13.3" UHD (3840x2160) IPS Display | 802.11 AC WLAN | Bluetooth 4.2 | USB 3.1 Type C (Thunderbolt) | SonicMaster Sound | Windows 10 Pro 64-Bit | 1 Year Limited Warranty | Deep Dive Blue

Our Price: $2,094.96
Retail: $2,186.78
In Stock: Back-Order
Vendor: ASUS
Rating: unrated


Seriously portable
As a seasoned traveler, you’ll appreciate the way ZenBook S slips effortlessly into your bag, with its svelte profile taking up the bare minimum of space and adding hardly any weight. Less bothersome bulk, more room for the really important stuff.

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Designed for ultimate comfort
With any ZenBook, your comfort is one of our top priorities, ZenBook S goes the extra mile with its exclusive ErgoLift hinge, an engineering masterpiece designed to automatically tilt the keyboard to the most comfortable typing position. But that’s not all: the carefully calculated tilt improves cooling and audio performance, too.

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The art of perfection
Elegance, sophistication and precision craftsmanship are the hallmarks of every ZenBook. The prestigious Deep Dive Blue and Rose Gold color scheme we chose for ZenBook S is luxuriously stylish without being brash, and for a discreetly indulgent finishing touch, we’ve added a gold keyboard backlight and lid logo. ZenBook S doesn’t just steal the show — it owns it.

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No fuss, no drama
ZenBook S is built to get things done as quickly and efficiently as possible, with no fuss or drama. The latest Intel® Core™ processors mean you’ll enjoy smooth and responsive performance whatever you’re doing, and the state-of-the-art components are all specially selected to ensure you’ll spend less time waiting and more time enjoying.
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A vision of beauty
A laptop as beautiful as ZenBook S deserves equally beautiful visuals, so we’ve fitted it with an ultra-high-definition NanoEdge display with lifelike colors and detail that will take your breath away. We’ve also reduced the bezel width even further, to give you an even more immersive view while keeping ZenBook S amazingly compact. Ultraportable computing has never looked so good.

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Work longer, charge faster
ZenBook S uses a high-capacity battery that won’t let you down, however long and demanding your working day is. And its fast-charge technology lets you recharge ZenBook S up to 60% capacity in as little as 49 minutes5, so you can be up and running quicker than ever.
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Operation System
Windows 10 Pro

Intel® Core™ i7-8550U processor

1.8GHz quad-core with Turbo Boost (up to 4.0GHz) and 8MB cache


Integrated Intel® UHD Graphics 620


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

16GB 2133MHz LPDDR3 onboard


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

1 x Type-C™ USB 3.1 Gen 1

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

Thunderbolt™ 3 USB-C™USB 3.1 Gen 1 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

KeyboardTouchpadFingerprint sensor
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 Wi-Fi


Bluetooth 4.2

Battery and Power
Up to 13.5 hours battery life2

50Wh 4-cell lithium-polymer battery

65W power adapter
(Output: 20V 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)

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

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