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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 are impressed by the screen and usability. The design and portability are also mentioned favorably, whereas there are some less positive views about the connectivity and keyboard. Views are divided on the touchpad.

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 87/100 = Very good quality.

See all ASUS Laptops

Review analysis

(Based on 263 reviews)

Expert Reviews  

User Reviews  

Showing 96 review(s)

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

Consumer review by: ( 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 are also mentioned favorably. Opinions are divided on the keyboard. There are some less positive opinions about the price and durability.

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

Oct, 2017

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


Front Camera:No / Yes
Front camera resolution (numeric):0.3


Display Surface:Gloss
HD type: No


Discrete graphics adapter: No
Number of displays supported (on-board graphics):2
Number of displays supported by on-board graphics adapter:2
On-board graphics adapter family:Intel® HD Graphics
On-board graphics adapter ID:0x116
On-board graphics adapter outputs supported:DisplayPort, Embedded DisplayPort (eDP), HDMI, Serial Digital Video Out (SDVO), VGA (D-Sub)


4G: No

Ports & interfaces

USB 3.0 (3.1 Gen 1) Type-A ports quantity:1


Conflict Free processor: No
ECC supported by processor: No
Integrated 4G WiMAX: Yes
Maximum internal memory supported by processor:16 / 8
Maximum number of PCI Express lanes:16
Memory bandwidth supported by processor (max):21.3
Memory channels supported by processor:Dual
Memory clock speeds supported by processor:1066,1333
Memory types supported by processor:DDR3-SDRAM
Processor cache level:L3
Processor cache type:L3 / Smart Cache, L3 / SmartCache, L3
Processor codename:Sandy Bridge
Processor Series:Intel Core i3-2300 Mobile series / Intel Core i5-2400 Mobile series / Intel Core i7-2600 Mobile series
Thermal Design Power (TDP):17

Processor special features

Intel 64: Yes
Intel Clear Video Technology: No
Intel Identity Protection Technology version:1.00
Intel Virtualization Technology (VT-x):Y / Yes
Intel Virtualization Technology for Directed I/O (VT-d):No / Yes
Processor ARK ID:54617 / 56858 / 59798
Processor package size:31