QuickerTek has introduced its newest 802.11n device: the US$125 Quicky3 (http://www.quickertek.com/products/Quicky.php), the third generation Quicky. This 802.11b/g/n 2.4GHZ unit purportedly has a mile line of sight range, draws 50% less power then the first and second generations and has the theoretical limit of 300 megabits per second of 802.11n (the previous models were 802.11b/g which ran 54 megabits per second).
The Quicky3 has a detachable 5 dbi high gain antenna so that you can connect other antennas. It works on any Mac with any open USB port with operating system Mac OS X 10.4. and higher. The Quicky3 conforms to the wireless standards 802.11b/g/n, making it compatible with all networks and not exclusively AirPort networks.
In fact, according to the folks at QuickerTek it should work on most if not all wireless networks, especially modern ones like; D Link, Linksys and Belkin. Quicky3 supports 64/128~bit WEP, WPA2 (AES with IEEE 802.11x) and WPA(TKIP with IEEE 802.11x) wireless encryption.