Model Number = WUSB54G
This is brand new, still in shrink wrap. Not required as my Mac has wireless built in. This is the Speed Booster version, so if you have a Linksys router you can get upto 125mbps. and thats quick! USB 2.0.
£20 delivered (RRP is about £30)http://images-eu.amazon.com/images/P/B0001HCRVC.03.LZZZZZZZ.jpg