USB head Ralink RT2770 11abgn module board 
(integrators only - enquire about volume pricing)

Dual-Band Wireless Client
WUBR-506N Dual-Band Wireless
USB Module uses the very latest wireless networking technology with Ralink
RT2870+RT2850 - Wireless Draft-N. It also works great with 802.11a/b/g networks.
Operating either in the 2.4GHz and 5GHz frequency bands, WUBR506N, 802.11n USB
module, effectively increases the available wireless bandwidth and reduces
wireless interference. It allows you to connect using whichever band works the
best for your situation
WUBR-506N delivers ultimate wireless data rate for up
to 300Mbps. It is designed properly for any wireless enabled devices with 4-Pin
connector. It can be use friendly to embedded development.

Secure Wireless Connection
WUBR-506N also features
advanced WEP encryption, WPA, WPA2, and AES to help protect data over wireless
communication without sacrificing the performance.

High-speed Wireless-N (draft 802.11n)
-802.11b/g
compliant
-Supports USB 2.0/1.1 interface
-WPA/WPA2 (IEEE 802.11i), WEP
64/128 Support
-OS Support: Windows 2000/XP/Vista,  Win CE, Linux, MAC
OSX

FEATURES
- Mac/BB Processor: Ralink RT2870
- RF Chip:
Ralink RT2850
- Antenna: 2 x I-PEX (UFL) connector (2T/2R), 2T2R
radio design
-11n to enhance the data transfer speed
-WMM
function to meet the multi-media data bandwidth requirement
-4 pin connector
model with locking plastics ( USB head can be soldered or volume produced as
desired - part WUBR506N-U)
- Dimensions 60.3 x 20.1 x 1mm ( L x W x H)
-
Operating Voltage DC 5V +/- 5%
- Operates in the 2.4GHz & 5GHz,
Backward Compatible in a 802.11a/b/g environment
- Wireless link speeds up to
300Mpbs;

Datesheet:  href="http://www.sparklan.com/downloadDataSheet.php?data_id=23">http://www.sparklan.com/downloadDataSheet.php?data_id=23
Linux
AP/STA source drivers available to integrators, please inquire with our volume
sales.