ASUS ZENBOOK UX21E
ASUS Super Hybrid Engine II for 2-second resume and up to 2 weeks* standby time
Incredible 3mm at the front and 9mm at the rear 
Spun metal and hairline aluminum for incredible beauty 
ASUS exclusive Super Hybrid Engine II with instant on 
2-second resume, four to five times the standby time, automatic data backup and recovery, and 25% longer battery life! 
SATA Revision 3.0** solid state drive and USB 3.0 incredible speed of data transfer rates 
SonicMaster technology co-developed with Bang & Olufsen ICEpower increases audio performance with lifelike surround impact 
The latest Intel Core processors 
Overview
Incredible Beauty
The ZENBOOK uses a precision-crafted design measuring only 3mm at the front and 9mm at the rear. The form features razor thin edges and a curved center section, which is both practical and attractive while accommodating the powerful computing components within, this design also looks totally unique. It embodies beauty and strength in complete balance and harmony.
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. ASUS ZENBOOK 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%. Youre 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, movie watching. ASUS ZENBOOK combines power, efficiency, smooth usage and user empowerment, all on in one sleek package.
*Actual UX31E & UX21E standby time may vary due to specific component performance, connected devices, and environmental differentiation.
Incredible Performance
ASUS is proud to deliver the worlds first ultrabook with SATA 6Gb/s solid state storage, making for an amazingly smooth and fast computing experience. Additionally, all ASUS ZENBOOK models ship with USB 3.0 as standard, multiplying the transfer rates of current USB 2.0 by as much as a factor of ten! Combined, SSD storage and USB 3.0 create incredible speed of data transfer rates.
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.
Specifications
Processor Intel® Core™ i3-2367M Processor (3M Cache, 1.40 GHz) 
Operating System Genuine Windows 7 Home Premium 64bit 
Chipset Intel QS67 Express Chipset 
Memory 4GB DDR3 1333 MHz SDRAM, OnBoard Memory 
Display 11.6" 16:9 HD (1366x768) LED Backlight 
Storage SATA3
64GB SSD 
Networking Integrated 802.11 b/g/n
Built-in Bluetooth V4.0 
Interface 1 x Headphone-out jack (Audio-in Combo)
1 x USB 3.0 port(s) 
1 x USB 2.0 port(s)
1 x micro HDMI
1 x Mini VGA 
Battery 35 Whrs Polymer Battery 
Power Adapter Output :
19 V DC, 2.37 A, 45 W
Input :
100 -240 V AC, 50/60 Hz universal 
Dimensions Only 3 mm at the front and 9 mm at the rear
29.9 x 19.6 x 0.3 ~1.7 cm (WxDxH) 
Weight 1.1 kg 
Manufacturer Warranty 2-year limited International hardware warranty. *different by country
On-line problem resolution through web interface (BIOS, Driver update)
OS (Windows 7 ) install/uninstall consultation
Bundled software install/uninstall consultation
ASUS software supporting