Portable Mini USB Wireless Router Dongle Internet Adapter WI-FI 150Mbps 802.11n Device Type: Wireless Adapter 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