D-LINK DWA-131, Wireless N Nano USB Adapter 802.11n, Backward Compatible with 802.11g and 802.11b, Up to 4 times farther than 802.11g. Support 802.11b/g/n wireless networks. Ad-hoc and Infrastructure operation modes. WEP, WPA, WAP2 encryption support. Tiny sized, WPS button D-Link