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-, MIMO based 802.11n, and available in reference to networking, PC, and consumer electronics markets.Chipset: Atheros AR9271Standards: IEEE 802.11b/gData rate:802.11b: up to 11 Mbps802.11g: up to 54 Mbps802.11n: up to 150 MbpsOS Supported: Windows 7/8/10 32/64-bit, Linux, Interface: USB 2.0Antenna: 3 dBi 2.4G Hz antennaFrequency range: 2.412 - 2.483 GHzChannels : 1-11 channels ( North America ), 1-13 channels (General Europe)Security: 64/128, 802.1X support, Wi-Fi 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 inchcolour:BlackMaterial:plasticPackage Contents:1 x Wireless USB WiFi AdapterOnly 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.