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Asus UX21E-KX004V 11.6 inch Ultrabook (Intel Core i5 2467M 1.6 GHz, 4GB RAM, 128 GB Solid State Drive, LAN, WLAN, Webcam) - Silver

3.9 out of 5 stars  See all reviews (32 customer reviews)

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  • A precision-crafted design features razor thin edges and a curved center section, which is practical
  • Ideal responsiveness - hybrid engine II with instant on enables 2-second resume of the notebook from sleep and up to two weeks of standby time with open files and other pending data kept safe in memory
  • Ideal performance - SSD storage and UISB 3.0 makes for an amazingly smooth and fast computing experience
  • SonicMaster technology co-developed with Bang & Olufsen ICEpower delivers ideal, lifelike audio
  • Be more productive with Windows 7 Home Premium
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Product Information

Technical Details
Item Weight2.7 Kg
Product Dimensions47 x 30 x 11.8 cm
Batteries:1 Nonstandard Battery batteries required. (included)
Item model numberUX21E-KX004V
Screen Size11.6 inches
Processor BrandIntel
Processor TypeCore i5
Processor Speed1.6 GHz
RAM Size4 GB
Computer Memory TypeDDR3 SDRAM
Hard Drive Size128 GB
Graphics Card DescriptionIntegrated
Graphics RAM TypeDDR3 SDRAM
Operating SystemWindows 7 Edition Home Premium
Lithium Battery Weight300 grams
Additional Information
Best Sellers Rank 28,945 in Computers & Accessories (See top 100)
Shipping Weight2.7 Kg
Date First Available17 Oct 2011
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Product Description

Product Description

Power Saving
The dedicated Battery Saving Node conserves power whenever possible.

Incredible beauty

The ASUS ZENBOOK UX21E is meticulously designed and engineered to achieve the thinnest profile and lightest form factor of any ultrabook, all while accommodating the latest technology in a harmonious marriage of power and art. Elegant and durable aluminum with a hairline spun finish reflects a cool, infinite look of limitless depth. The ASUS ZENBOOK™ UX21E measures a minimum thickness of only 12" and weighs only 2.43lbs.

Incredible responsiveness

Exclusive ASUS Super Hybrid Engine II with Instant On enables 2-second resume of the notebook from sleep, with up to two weeks of standby time with open files and other pending data kept safe in memory. Plus, automatic data backup when the battery reaches 5% charge further helps secure your work. The ASUS ZENBOOK UX21E keeps energy saving front and center with a dedicated Battery Saving Mode, which conserves power whenever possible to increase battery life by as much as 25%.

Sonic Master
SonicMaster technology delivers breathtaking, lifelike audio.

You're also always in the know when it comes to the battery thanks to ASUS PowerWiz, a utility that shows exactly how much charge is left per application -- web browsing, gaming, movie watching and more. The ASUS ZENBOOK UX21E combines power, efficiency, smooth usage and user empowerment, all on in one sleek package.

SuperSpeed USB 3.0
The ASUS ZENBOOK UX21E ships with SuperSpeed USB 3.0 as standard.

Incredible performance

ASUS is proud to deliver the world's first ultrabook with SATA 128GB solid state storage, making for an amazingly smooth and fast computing experience. Additionally, the ASUS ZENBOOK UX21E ships with SuperSpeed USB 3.0 as standard, multiplying the transfer rates of current USB 2.0 by as much as a factor of ten.

Incredible audio

Another ASUS exclusive, SonicMaster technology was co-developed with Bang & Olufsen ICEpower to deliver breathtaking, lifelike audio that far exceeds the limitations of conventional notebook PC sound performance. Deeper, more impactful and wider in range, SonicMaster delivers four times the sound output of other ultrabooks without increasing the size or weight of the form factor.

Box Contains


Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews
91 of 92 people found the following review helpful
5.0 out of 5 stars Macbook Air beater.........? 28 Nov 2011
Looks first of all (most likely the reason you will be looking at this laptop)
The brushed aluminum finish, the build quality and the styling is fantastic and is up there with any of Apples products. It has a tapered edge but even at the screen hinge it is very, very thin. The design is admittedly ripped off from the macbook air but do you ever hear Jaguar drivers moaning because their car looks like an Aston Martin?

It is quite heavy for its size, and heavier than an MB-Air. That said I carry mine around in a laptop bag all day but it doesn't make my shoulder ache like my old 15" laptop used to. It feels very solidly put together and I don't worry about it bending in my bag despite it being so thin.

It has a good selection of ports considering there is virtually no edge to it, 2x usb 3.0, display port, mini hdmi and headphone. It comes packaged with a USB LAN adapter and a display port to VGA adaptor.

Under the hood it is a very capable little machine with very respectable specs. The Core I5 CPU is 2nd gen but it is a mobility version so does not quite have the power of its bigger desktop cousins. Still you will have to be running a lot to trouble it. The 4gb of RAM included is standard now for a 64 bit operating system (which this has installed). Occasionally it stutters when there is a lot going on but in general it will glide through whatever you can throw at it. I've had Photoshop, Illustrator and a few games running on it with no problems.

The hard disk is a solid state drive, its the first time I've used one and I am impressed, it will boot from sleep instantly and from off to windows fully loaded takes around 20 seconds. Booting programs from the disc is also much quicker as you would expect.
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24 of 24 people found the following review helpful
4.0 out of 5 stars Asus ux21 comparison to Macbook Air 17 Mar 2012
The Asus UX21 is beautiful crafted. The compact solid aluminum body is gorgeous. The pictures don't do it justice. This ultra book has a similar compact build to the Macbook Air. However the lid color is a more metallic dark grey compared to the silver finish of the Air. Asus have really gone out of there way to compete with the Macbook Air in asthetics. The way the stickers are silver and don't stand out, shows how much they care. Out of the box. The UX21 comes with a power adaptor which comes in two parts and is very solid (The windows licence key is on the adaptor so don't lose it), especially compared to the Asus transformer prime adaptor which is rather flimsy. Also Asus have supplied a envelope pouch free which is a nice brown with a magnetic closer.It also come with manual, cable tie, cleaning cloth and pouch for the free vga adaptor and ethernet usb dongle. Apple charges for all these extras so its nice to save some money. (Its come to my attention from a verified purchaser that these extras were not include in the Amazon package. So consider wisely where to purchase this from. I got mine from Ballicom.)

The Asus UX21 comes with an I5 mobility processor, 4Gb Ram and 128 Solid State Drive. This is comparable to the latest Macbook Air, but with a price of up to 100-150 pounds less if you look around. For the same specs.

The Asus UX21 comes with Windows 7 installed and some pre-installed software from Asus. The software installed are Asus utility which includes live updates. (After boot up its best to install these for critical updates for drivers or bios updates etc). Asus vibe, Asus web storage for cloud, Life Frame for taking and editing video and Trend Internet Security trial. It also comes with Windows office 2010 starter which consists of word and excel.
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9 of 9 people found the following review helpful
3.0 out of 5 stars Beautiful but far from perfect 11 Oct 2012
Verified Purchase
Insufficient quality for working on for a prolonged time but so cute you might just forgive it.


+ Its beautiful - so slim and well finished
+ Performance is good with instant resume (SSDs yum)
+ Battery life is fine
+ Small power supply is neat
+ Well presented in packaging
+ I like the "envelop" style case


- Display quality is poor - bright and washed out even at min brightness
- Does not remember changes to display contrast settings
- Keyboard quality is poor - plasticy, poor response and layout
- Power switch is same shape and location as a normal delete key
- No page-up\page-down buttons
- Not a big fan of the touchpad:
- too big on a small laptop so palm touches are too frequent
- buttons are integrated into the pad
=> means clicking causes accidental mouse moves too
- Filled with a lot of crapware
- Asus updater is deeply crap (frequent forced reboots)
- Once open, the lid hinge has very little friction so moving the laptop will cause it to flop open
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3 of 3 people found the following review helpful
5.0 out of 5 stars Amazingly Powerful for the size! 4 Dec 2012
Verified Purchase
I work as a Software Engineer and I bought this laptop so I could have a laptop I could cart around easily while still being able to have the processing power to compile and run large applications and work on heavy workloads at the same time and I was very impressed! Needless to say this laptop is very mac-like with many manufacturers beginning to release very pretty and powerful machines without terrible performance due to small processors (such as the Intel Atom urgh!).

At first glance I couldn't believe how thin it was, the images don't really do this ultra book justice as it seems to be thinner than the MacBook air!

The SSD also gives the boot time incredible speed, I installed Fedora Linux for work reasons and I can boot to login screen (KDM) in 5-6 seconds. Loading and unloading applications is also very fast..

I found it unbelievable that they managed to stick an Intel i5 inside this tiny ultra book! I thought for sure that the processor would burn through the case and drop out the bottom while it was running but it runs at a reasonable temperature.
It should go without saying that you should not try and accomplish anything hugely taxing graphically on this ultra-book. The Intel graphics card is great for every-day use and can handle desktop and HD video tasks really well but gaming it will struggle with not to mention the amount of heat it will produce with any mainstream 3d games (as a friend of mine tried).
Basically if you want a high-performance machine that can be carried around very easily then I recommend this. However if you want something which can handle quite taxing graphical tasks then get something bigger..
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Most Recent Customer Reviews
1.0 out of 5 stars Dissatisfied
I purchased this notebook in July 2012 for my wife to replace her damaged Sony Vaio.

It has been the most annoying computer I have ever had the misfortune to own. Read more
Published 8 months ago by Amazon Customer
5.0 out of 5 stars This notebook is simply awesome in all aspects
Even the packaging was sensational, a real pleasure to open as a present, and then hear the wow noises. It is extremely fast as well. Best computer purchase ever!!
Published 17 months ago by Bruce Bandeen
2.0 out of 5 stars Definitely Faulty Design - Wish I'd Never Bought
I bought my zenbook about 9 months ago. I have three computers, run an internet based business and travel from UK to US about three times a year. Read more
Published 17 months ago by sid100
4.0 out of 5 stars Not cheap but quality
I approached this purchase with some trepidation because it is not cheap, but the package delivers. It is light, rugged, stylish and reliable. So a good buy. Read more
Published 21 months ago by Mr. William Battersby
2.0 out of 5 stars Fragile!!!!!!!!
Following on from touch typing comments re. the keyboard: It's FRAGILE.

Two keys have escaped! Read more
Published 21 months ago by An old 14 Crew
4.0 out of 5 stars Asus.
The laptop is very good but I am not happy with screen as it is falling down often. it should be little hard.
Published 22 months ago by Hasmukh
3.0 out of 5 stars Not as reliable as a MacBook Air
Ordered in December, but had to return to Amazon in January for a replacement, as it simply kept turning itself off for no reason. Read more
Published 23 months ago by ChuckyH
1.0 out of 5 stars Asus Zenbook
This had disc errors, wouldn't start up until it had "warmed up", and on the advice of Technical Support had to be returned.
Published 24 months ago by sarev
5.0 out of 5 stars Ultrabook
Its nice to look at, compact, I was tempted to buy the cheaper netbook option but having had them before, it was time for a change. Read more
Published on 20 Jun 2012 by Dave
5.0 out of 5 stars Perfect for everywhere
The Asus Ultrabook delivers everything as promised. It is designed so that you can keep it 'always on'. Read more
Published on 11 Jun 2012 by Amazon Customer
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