Mini USB Wireless Router Dongle Internet Adapter WI-FI 150Mbps #1 for Laptop PC Driver Download: http://downloads.cifang.org/Computers & Networking/360freeap_whole_setup.exe Network protocol supported: CSMA/CA with ACK Interface: USB 2.0 Operation systems: WIN2K, XP, VISTA, WIN7, MAC, LINUX. Size:2cm x 1.5cm x 0.6cm-0.79inch x 0.59inch x 0.23inch