AR9271 is an IEEE 802.11b/g Wireless USB adapter. It provides users launch of IEEE 802.11b/g wireless network at 150 Mbps in the 2.4 GHz band, compatible with IEEE 802.11b/g wireless devices at 54 Mbps. AR9271 is capable of multi-stream, MIMO based 802.11n, and available in reference to networking, PC, and consumer electronics markets. Chipset: Atheros AR9271 Standards: IEEE 802.11b/g Data rate: 802.11b: up to 11 Mbps 802.11g: up to 54 Mbps 802.11n: up to 150 Mbps OS Supported: 7/8/10 32/64-bit, Linux, Linux Interface: USB 2.0 Antenna: 3 dBi 2.4G Hz antenna Frequency range: 2.412 - 2.483 GHz Channels : 1-11 channels ( North America ), 1-13 channels (General Europe) Security: 64/128, 802.1X support, Wi-Fi Protected access (WPA), WPA-, WPA II- Weight: 14.0 g / 0.03 lb (Adapter only) Dimension (L x W x H): 7.6 x 2.6 x 1.2 cm / 3.0 x 1.02 x 0.47 inch colour:Black Material:plastic Package Contents: 1 x Wireless USB WiFi Adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.