Rosewill Wireless Adapter IEEE 802.11b/g/n USB 2.0 2T2R / 2x 5 dBi External Antenna (RNX-N250UBE) Chipset: Realtek RTL8192CU Comply with IEEE 802.11b, 802.11g and 802.11n standard for 2.4GHz Wireless LAN Support advanced 2 x 2 MIMO Technology with up to 300Mbps data transfer rate