This document provides specifications for two ASUS Zenbook Ultrabook models, the UX21 and UX31. It lists the processors, operating systems, dimensions, memory, displays, I/O ports, storage, battery life, and other key specifications of the two models. The UX31 has a larger 13.3 inch screen compared to the 11.6 inch screen of the UX21. Both models are thin and light with quick resume capabilities and long battery life.

2. Model ASUS ZENBOOK™ UX21 (Ultrabook™) ASUS ZENBOOK™ UX31 (Ultrabook™)
CPU Intel® Core™ i7 2677M Processor Intel® Core™ i7 2677M Processor
Intel® Core™ i5 2467M Processor Intel® Core™ i5 2557M Processor
Intel® Core™ i3 2367M Processor
Operating System Genuine Windows® 7 Professional 64bit Genuine Windows® 7 Professional 64bit
Genuine Windows® 7 Home Premium 64 bit Genuine Windows® 7 Home Premium 64 bit
Genuine Windows® 7 Home Basic 64 bit Genuine Windows® 7 Home Basic 64 bit
This version contains all product updates (SP1) This version contains all product updates (SP1)
Z‐height 3mm at the front; 9mm at the rear 3mm at the front; 9mm at the rear
Main Memory DDR3 1333MHz 2GB/4GB (on board) DDR3 1333MHz 4GB (on board)
Screen 11.6 (16:9) 13.3 (16:9)
Backlight/ 450 nits HD 1366x768 450 nits HD+ 1600X900
Resolution
Instant on Always resume in 2 seconds Always resume in 2 seconds
USB charger+ Y Y
I/O port
I/O t 6 (USB2.0 / USB3.0 / audio jack / DC jack / microHDMI /
6 (USB2 0 / USB3 0 / audio jack / DC jack / microHDMI / 7 (USB2.0 / USB3.0 / audio jack / DC jack / microHDMI /
7 (USB2 0 / USB3 0 / audio jack / DC jack / microHDMI /
miniVGA) miniVGA / SD card reader)
USB3.0 1 Port 1 Port
SSD Generation SATAIII SSD (64G/128G/256G) SATAIII SSD (128G/256G)
BT Bluetooth 4.0 Bluetooth 4.0
Battery 35W (5+ hrs) 50W (7+hrs)
Mic MEMS MIC (Digital MIC) MEMS MIC (Digital MIC)
Keyboard 268 Chiclit KB 286 Chiclit KB
Camera 0.3M 0.3M
Audio Bang & Olufsen ICEpower® SonicMaster Bang & Olufsen ICEpower® SonicMaster

3.  F i hild PBKAF FBKFJ FDMC 7696
Fairchild PBKAF FBKFJ FDMC 7696
 Fairchild PBKAF FDMC 0310AS
 Richtek RT8166B
4GB DDR3 system memory
 Intel Core i3/i5/i7 mobile processor
 SATA ADATA XM11 SSD/SanDisk SSD
SATA, ADATA XM11 SSD/SanDisk SSD
 Intel QS67 PCH
 Texas Instruments BQ24740;
Multi‐Cell Synchronous Switch‐mode Battery Charger
 minicard slot;
AzureWave AW‐NB086 WiFi/BT combo module

4. 4GB DDR3 system memory
 ITE IT8572G embedded controller
ITE IT8572G embedded controller
 Fresco Logic FL1000‐2Q0; USB 3.0 controller
 Richtek RT8206A

6. Manufacturer Device Function
▼Processor
Intel Intel Core i3/i5/i7 processor
p Processor + Intel HD 3000 graphics
g p
▼Memory
Elpida Elpida J4216BASE-DJ-F 4GB, onboard DDR3 system memory
▼Chipset
Intel Intel QS67 PCH
▼Radio Frequency
AzureWave AzureWave AW-NB086 Atheros AR9004WB-1NG
‧Atheros AR9485 and AR3012
‧802 11n WiFi + Bluetooth 4 0
‧802.11n 4.0
▼EC
ITE IT8572G System power management controller
▼Audio
Realtek ALC269 HD Audio codec

7. Manufacturer Device Function
▼Storage
ADATA/SanDisk
/ XM11 SSD(128GB)/SanDisk(256GB)
( ) ( ) SandForce SF-2281VB1 SATA SSD controller
▼User Inputs
ELAN 33200V-3600 1139 BW118V1 Touchpad controller
▼Others
FDMC7696
Fairchild
FDMC0310AS
Fresco Logic FL1000 USB 3.0 host controller
Texas Instruments BQ24740 Multi-Cell Synchronous Switch-mode Battery Charger
y y g
Macronix MX25L3206E 32M-BIT CMOS serial flash
RT8166B
Richtek
RT8206A High-Efficiency, Main Power Supply Controller for Notebook Computers
Linear Technology 3857