Eminent EM4556 wBUS 300. Connectivity technology: Wireless, Host interface: USB, Interface: USB. Data transfer rate (max): 300 Mbit/s. Networking standards: IEEE 802.11g, IEEE 802.11n. Colour of product: Black. Mac operating systems supported: Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion