Aptech 300MBPS Wireless Wifi USB Adapter

802.11n up to 300M (downlink) and 300M (uplink); 

802.11g 54/48/36/24/18/12/9/6 Mbps auto fallback; 

802.11b 11/5.5/2/1 Mbps auto fallback. 

Frequency range: 2.4GHz ISM 

Chipset: Realtek 8191 

RF output power: 13-17dBm 

Radio channel: 1-14 channels 

Operating system: Windows 7/8/10/11 Linux, MAC OS x