Rosewill RNX-G1 Wireless Dongle with External 2dBi SMA Antenna IEEE 802.11b/g A-Type USB 2.0, BlackRosewill Wireless Dongle with External 2dBi SMA Antenna IEEE 802.11b/g A-Type USB 2.0, RNX-G1 (Black) Media Access Protocol: CSMA/CA (Collision Avoidance) with ACK IEEE 802.11b/g Up to 54Mbps