This item is new in the box. Works off of the B or G Networks. This simply goes into your desktop with the antenna sticking out of it to catch your signal from your wireless router. Comes with the software on disk.

- 54Mbps 802.11g - Data transfer rate: 54 Mbps - Frequency band: 2.4 GHz - Supports the following operating systems: Mac, Windows 2000, Windows XP, Windows 7, Windows Vista32/64, Linux