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Asus Zenbook UX21E

alaTest has collected and analyzed 263 reviews of Asus Zenbook UX21E. The average rating for this product is 3.8/5, compared to an average rating of 4.1/5 for other Laptops for all reviews. Reviewers really like the screen and usability. The design and portability also get good views, but views are divided on the touchpad. The connectivity and keyboard get less positive opinions.

performance, portability, design, usability, screen

keyboard, connectivity

We analyzed user and expert ratings, product age and more factors. Compared to other Laptops the Asus Zenbook UX21E is awarded an overall alaScore™ of 86/100 = Very good quality.

See all ASUS Laptops

Review analysis

(Based on 263 reviews)

Expert Reviews  

User Reviews  

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Showing 1 - 58 of 96 Show Reviews: in English | in other languages (165)

Consumer review ( review summary for Asus Zenbook UX21E


alaTest has collected and analyzed 48 user reviews of Asus Zenbook UX21E from The average user rating for this product is 3.9/5, compared to an average user rating of 4.0/5 for other Laptops on People really like the reliability and usability. The design and performance also get good reviews. Many are critical about the price and durability. Views are divided on the keyboard.

portability, performance, design, usability, reliability

durability, price

83% of the reviews on give this product a positive rating.

This summary is based on the products: Asus UX21E-KX004V 11.6 inch Ultrabook (Intel Core i5 2467M 1.6 GHz, 4GB RAM, 128 GB Solid State Drive, LAN, WLAN, Webcam) - SilverAsus UX21E-KX004V 11.6 inch Ultrabook (Intel Core i5 2467M 1.6 GHz, 4GB RAM, 128 GB Solid State Drive, LAN, WLAN, Webcam) - Silver

May, 2018

Expert review by (

Review Asus Zenbook UX21E Ultrabook


Perfection. The power version of the Zenbook, with a Core i7, is as handy as a netbook but faster than most multimedia machines. How is this possible with a build height of 17 millimeters? The lightning-fast ADATA SSD sets the standard higher than ever.

Low weight and slim case, Stiff & high quality aluminum case, Good input devices, Very good application performance, Extremely fast SSD, Very bright screen, Unequivocally solid aluminum body. We gladly accept the few grams more compared to the MacBook Air

Few interfaces, Reflective screen, Poor colors, viewing angles, RAM & battery built-in permanently, Short battery life of less than four hours, Very loud during load, A battery life of at least five hours and wide viewing angles

Nov, 2011

Expert review by : Eric Grevstad (

Asus Zenbook UX21E-DH52


A mix of ultrabook and ultraportable, the Asus Zenbook UX21E-DH52 is a formidable challenger to the 11-inch MacBook Air.

Marvelously thin and light. Bright screen. Nifty AC adapter. VGA and Ethernet dongles and case included.

Stiff, non-backlit keyboard. Reflective screen. No memory-card slot. Lethal power button position.

More laptop reviews:• Dell Latitude 7280• Samsung Galaxy Book (12-Inch, LTE)• Dell Latitude 5285 2-in-1• LG gram 14 (2017)• Microsoft Surface Pro (2017)• more

Feb, 2012

Expert review by : Anand Lal Shimpi (

ASUS Zenbook (UX21) Review


Tablets have introduced a number of great features that are currently without equal in the notebook space. They are ultra light, extremely responsive, have tremendous battery life and are generally instant-on devices. Tablets however, aren't that great...

Oct, 2011

Expert review by : Eric Grevstad (

Asus Zenbook UX21E-DH52


The Asus Zenbook UX21E-DH52 has an 11.6-inch screen, an Intel Core i5 processor, and the same 4GB of RAM and 128GB solid-state drive as its bigger sibling. In terms of high performance in a trivially light package, it's a netbook's worst nightmare. But...

Marvelously thin and light. Bright screen. Nifty AC adapter. VGA and Ethernet dongles and case included

Stiff, non-backlit keyboard. Reflective screen. No memory-card slot. Lethal power button position

A mix of ultrabook and ultraportable, the Asus Zenbook UX21E-DH52 is a formidable challenger to the 11-inch MacBook Air.

Feb, 2012

Expert review by : InsideHW (

Expert Review


In accordance with ASUS philosophy of presenting new devices in short periods of time, not long after the first Fonepad, new models, Fonepad Note 6 and Fonepad 7, have been announced. Unfortunately, f... Mechanical keyboard are conceptual way of going...

Jan, 2012

Expert review by : William Harrel (

Asus ZenBook UX21E Review and Ratings


This sleek and modern-looking ultrabook is an impressive, MacBook Air-style thin wonder. It will make an excellent travel companion for anyone demanding power and extreme portability.

Highly portable ; Strong and fast performance ; Gorgeous polished-aluminum case ; Superb audio system

No memory-card slots ; Keyboard a little shallow, and lacks backlighting ; Slightly less-than-vivid color reproduction

Considering the high level of complexity involved in designing a notebook as thin and light as the ZenBook UX21E, we have to give Asus credit for its first foray into the ultrabook category. Despite a few first-time-out quirks, such as a...

Nov, 2011


Expert review by : Dave Altavilla (

Asus Zenbook UX21 Ultrabook, The New Thin


The Asus Zenbook UX21E is a new ultra-slim notebook by Asus, that fits into the new "Ultrabook" class of machines, to use a term coined by Intel. The Zenbook UX21E is an incredible 3mm thick at the front and 9mm at the rear and has spun metal and...

Gorgeous good looks ; Exceptional build quality ; Light as a 2.4lb feather ; Top-shelf ultra-low power components ; Solid battery life ; Great performance

No DVI or HDMI output ; No backlit keyboard ; Key cap travel is a bit shallow, takes getting use to

The Asus UX21E-DH71 surprised us more than once in our assortment of tests. The machine offered some of the best standard application and multimedia performance scores we've seen from an ultralight machine to date. The UX21's PCMark Vantage and PCMark...

Nov, 2011

Expert review by (toptenreviews.com_old)

Asus Zenbook UX21


While the Zenbook UX21 ultrabook does lack many of the higher-grade parts of others in the Asus Zenbook family, it is still an excellent ultrabook. You get an LED screen with a 16:9 resolution, an ultrathin design and an HDMI port so you can hook it up...

The UX21 is thin, sleek and can boot up from sleep mode in under three seconds

The keyboard isn't backlit, and the tracking on the keypad seems to be too sensitive

The track pad is frustrating, and the UX21 lacks a memory card reader, but it is simply one of the more beautiful utrabooks on the market.

Expert review by : James Stables (

Asus Zenbook UX21 review


One of the best 11-inch laptops - but can it justify its price?

Light and slim ; Sandy Bridge power ; Strong ; Carry case supplied ; Great battery life

Pricey for an 11-inch machine ; Small keyboard ; Limited connectivity ; Frustrating track pad

The Asus Zenbook UX21 is the first 11-inch ultrabook to hit the shelves, joining the likes of the Acer Aspire S3 and its bigger brother, the Asus Zenbook UX31.

Nov, 2011


Expert review by : Andrew Harrison (

Asus Zenbook UX21E review


The Asus Zenbook UX21E is a shiny example of the modern 11in ultraportable notebook.

We’re inclined to affirm that we do believe in love at first sight. But since that initial look was of the laptop that launched this copy, our heart does stay with the MacBook Air. Make no mistake though, the Asus UX21E Zenbook is the best copy of any...

Jan, 2012

Product Specifications


Audio system:SonicMaster
Built-in Microphone: Yes
Built-in speaker(s):Y
Built-in speakers: Yes
Speakers manufacturer:Bang & Olufsen


Battery Capacity:35
Battery capacity (Watt hours):35
Battery life (max):5
Battery performance:4800
Battery Technology:Lithium Polymer (LiPo) / Polymer
Number of battery cells:6


Front Camera:N / Y / Yes
Front camera resolution (numeric):0.3
Swivel webcam: No


Color of product:Aluminium / Aluminium, Metallic / Grey, Silver / Grey, Stainless steel / Metallic / Metallic, Silver / Pink / Silver / Stainless Steel
Form Factor:Clamshell
Housing material:Aluminium / Aluminium, Metal
Intel segment tagging:Enterprise
Market positioning:Ultrabook
Product type:Ultrabook


3D:N / No
3D compatibility: No
Aspect Ratio:15:9 / 16:9
Display Diagonal:11.6 / 12
Display Resolution:1366 x 768
Display Surface:Gloss
HD type:Not supported
LED backlight: Yes
Touch screen: No
Touchscreen:N / No

Energy Management

AC adapter frequency:50/60
AC adapter input voltage:100 - 240
AC adapter output current:2.37
AC adapter output voltage:19
AC adapter power:45
Power auto-sensing: Yes


Discrete graphics adapter:N / No
Discrete graphics adapter model: No
Number of displays supported (on-board graphics):2
On-board graphics adapter: Yes
On-board graphics adapter base frequency:350
On-board graphics adapter dynamic frequency (max):1000 / 1150 / 1200
On-board graphics adapter family:Intel® HD Graphics
On-board graphics adapter ID:0x116
On-board graphics adapter model:Intel HD Graphics 3000


Full-size keyboard: Yes
Keyboard language:English
Keyboard Layout:AZERTY / QWERTY
Keyboard type:AZERTY / QWERTY
Numeric keypad:No / Yes
Pointing device:Touchpad
Windows keys: Yes


Internal memory:2 / 4
Internal memory type:DDR3-SDRAM
Memory clock speed:1333
Memory form factor:On-board


3G: No
4G:N / No
4G WiMAX: No
Bluetooth: Yes
Bluetooth version:4.0
Data network: No
Ethernet LAN:N / No
Ethernet LAN connection: No
Wi-Fi: Yes
Wi-Fi data rate (max):150
Wi-Fi standards:802.11b, 802.11g, 802.11n

Optical Drive

LightScribe: No
Optical Drive Type: No

Other Features

Audio system:SonicMaster
Dimensions (WxDxH):11.8 x 7.72 x 0.669
Display:LCD / LED
Graphics adapter family:Intel
HD-Ready: Yes
Infrared data port: No
Intel visual technologies:Intel Clear Video HD, Intel Insider, Intel InTru 3D, Intel Quick Sync Video
Power Requirements:100 - 240 V / 100 - 240 V AC / 100 -240 V AC
Power supply type:AC/DC

Packaging Data

AC adapter bundled: Yes
AC adapter included:Y / Yes
Cables included:AC / Yes
Manual: Yes
Quick start guide: Yes

Ports & interfaces

CardBus PCMCIA slot type: No
Combo headphone/mic port: Yes
DC-in jack: Yes
Docking connector: No
DVI port: No
ExpressCard slot: No
Headphone connectivity:3.5 mm
Headphone outputs:1
Line-in: No
Micro HDMI ports quantity:1
Microphone connectivity:3.5 mm
Microphone in:No / Yes
Mini VGA ports quantity:1
S/PDIF out port: No
SmartCard slot: No
TV out:N
TV out port: No
USB 2.0 ports quantity:1
USB 3.0 (3.1 Gen 1) Type-A ports quantity:1
USB 3.0 ports quantity:1


AC adapter frequency:50/60
AC adapter input voltage:100 - 240
AC adapter output current:2.37
AC adapter output voltage:19
AC adapter power:45
Power auto-sensing:Y


Bus type:DMI
Chipset:Intel QS67 Express
Conflict Free processor:N / No
CPU multiplier (bus/core ratio):14 / 16 / 18
ECC supported by processor:N / No
FSB Parity: No
Integrated 4G WiMAX:Y / Yes
Maximum number of PCI Express lanes:16
Motherboard chipset:Intel QS67 Express
PCI Express configurations:1x16, 2x8, 1x8+2x4 / 1x8, 1x16, 2x4, 2x8
PCI Express slots version:2.0
Processor:I3-2367M / I5-2467M / I7-2677M
Processor boost frequency:2.3 / 2.9
Processor cache:3 / 4
Processor cache type:L3 / Smart Cache
Processor codename:Sandy Bridge
Processor cores:2
Processor family:2nd gen Intel® Core™ i5 / 2nd gen Intel® Core™ i7 / Intel Core i3-2xxx / Intel Core i5-2xxx / Intel Core i7-2xxx
Processor frequency:1.4 / 1.6 / 1.8
Processor lithography:32
Processor Manufacturer:Intel
Processor model:I3-2367M / I5-2467M / I7-2677M
Processor operating modes:64-bit
Processor Series:Intel Core i3-2300 Mobile series / Intel Core i5-2400 Mobile series / Intel Core i7-2600 Mobile series
Processor socket:BGA1023
Processor threads:4
System bus data transfer rate:5
System bus rate:5
Thermal Design Power (TDP):17

Processor special features

CPU configuration (max):1
Embedded options available: No
Enhanced Intel SpeedStep Technology: Yes
Execute Disable Bit: Yes
Graphics & IMC lithography:32
Idle States: Yes
Intel 64:Y / Yes
Intel AES New Instructions:No / Yes
Intel Anti-Theft Technology: Yes
Intel Clear Video HD Technology: Yes
Intel Clear Video Technology:N / No
Intel Clear Video Technology for MID: No
Intel Demand Based Switching: No
Intel Dual Display Capable Technology: Yes
Intel Enhanced Halt State: Yes
Intel Fast Memory Access: Yes
Intel FDI Technology: Yes
Intel Flex Memory Access: Yes
Intel Hyper-Threading Technology: Yes
Intel Identity Protection Technology: Yes
Intel Identity Protection Technology version:1.00
Intel Insider: Yes
Intel InTru 3D Technology: Yes
Intel My WiFi Technology: Yes
Intel Quick Sync Video Technology: Yes
Intel Rapid Storage Technology: No
Intel Smart Cache: Yes
Intel Trusted Execution Technology:No / Yes
Intel Turbo Boost Technology:2.0 / No
Intel Virtualization Technology (VT-x):Y / Yes
Intel Virtualization Technology for Directed I/O (VT-d):N / No / Y
Intel visual technologies:Intel Clear Video HD, Intel Insider, Intel InTru 3D, Intel Quick Sync Video
Intel vPro Technology:No / Yes
Intel VT-x with Extended Page Tables (EPT): Yes
Intel Wireless Display (WiDi) Technology: Yes
Intel® AES New Instructions (Intel® AES-NI):N / Y / Yes
Intel® Anti-Theft Technology (Intel® AT):Y / Yes
Intel® Clear Video HD Technology (Intel® CVT HD):Y / Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID):N / No
Intel® Hyper Threading Technology (Intel® HT Technology):Y / Yes
Intel® Identity Protection Technology (Intel® IPT):Y / Yes
Intel® Insider™: Yes
Intel® InTru™ 3D Technology:Y / Yes
Intel® My WiFi Technology (Intel® MWT):Y / Yes
Intel® Quick Sync Video Technology: Yes
Intel® Smart Cache:Y / Yes
Intel® Turbo Boost Technology:2.0 / No
Intel® vPro™ Technology:N / No / Y
Intel® Wireless Display (Intel® WiDi):Y / Yes
InTru™ 3D Technology: Yes
Processor ARK ID:54617 / 56858 / 59798
Processor code:SR0CV / SR0D6
Processor package size:31
Supported instruction sets:AVX
Thermal Monitoring Technologies: Yes


Cable lock slot:No / Yes
Fingerprint reader: No


Drivers included: Yes
Operating system architecture:64-bit
Operating system installed:Windows 7 Home Premium / Windows 7 Professional


Card reader integrated:No / Yes
Compatible memory cards:SD / SDIO / SDXC
Number of SSDs installed:1
Solid-state drive capacity:128 / 256 / 64
Solid-state drive interface:Serial ATA / Serial ATA III
Solid-state drive interfaces:SATA / Serial ATA III
Storage media:SSD
Total Storage Capacity:128 / 256 / 64

Technical Details

Intel visual technologies:Intel Clear Video HD, Intel Insider, Intel InTru 3D, Intel Quick Sync Video

Weight & Dimensions

Depth:7.72 / 8
Height (front):0.0118 / 0.118 / 1.18 / 3
Height (rear):0.0669 / 0.669 / 1
Weight:2 / 2.43
Width:11.8 / 12