Used Cisco Aironet AIR-CB20A-A-K9 in excellent condition. 5 GHz, 54 MB wireless adapter. Guaranteed against DOA. 802.11a CardBus Adapter with built-in Antenna, FCC Cnfg. Software/Drivers available on Cisco website for free. Please note this card does not work with 2.4 GHz routers (access point), works only with 5 GHz access point. There are no reviews for this product