Premiertek HT-2223BK. Connectivity technology: Wireless, Host interface: Wireless, Interface: USB. Data transfer rate (max): 54 Mbit/s. Chipset: RTL8187B, Networking standards: IEEE 802.11b, IEEE 802.11g, Frequency band: 2.412 - 2.484 GHz. Wireless LAN type: 802.11b, 802.11g, WLAN data transfer rates supported: 1, 2, 6, 9, 12, 18, 24, 36, 48, 5.5 Mbit/s. Mac operating systems supported: Mac OS X 10.3 Panther, Mac OS X 10.4 Tiger