There are 3 models optional, different model with different interface and appearance, please choose suitable model before purchase: 1150Mbps ChipsetRTL8188 2150Mbps ChipsetRTL8188GU 3150Mbps ChipsetMT7601 1150Mbps ChipsetRTL8188 Descriptions: Size:about 20 x 15 mm. Interface:USB 2.0 High Speed. Chip:RTL8188 Speed:150 Mbps. Conform to the IEEE802.11b standard,IEEE 802.11g,IEEE 802.11n draft. Operating System:for Windows 2000 / XP / Vista / WIN7 / 8 / Linux / Mac OS Packing Include: 1 x Wireless 150Mbps USB Adapter 2150Mbps ChipsetRTL8188GU Specifications: Chipset: for Realtek RTL8188GU Interface:USB2.0 Hi-Speed connector Wireless Speed:11n: Up to 150Mbps Frequency Range:2.4-2.4835GHz Wireless Transmit Power:20dBmMAX EIRP Modulation Technique:OFDM/CCK/16-QAM/64-QAM Work Mod:Ad-Hoc/ Infrastructure Wireless Security:64/128 bits WEP, WPA/WPA2, WPA-PSK/WPA2-PSK TKIP/AES Temperature Range:Operating-20 to 70, Storage:-40 to 90 Humidity:Operating 5% to 95% non-condensing, Storage: Max. 90% Support Operating System:for Windows XP/Vista/Linnux/Win 7/Win 8/Win8.1 /Win10 3150Mbps ChipsetMT7601 Specifications: Chipset: for Realtek MT7601 Interface:USB2.0 Hi-Speed connector Wireless Speed:11n: Up to 150Mbps Frequency Range:2.4-2.4835GHz Wireless Transmit Power:20dBmMAX EIRP Modulation Technique:OFDM/CCK/16-QAM/64-QAM Work Mod:Ad-Hoc/ Infrastructure Wireless Security:64/128 bits WEP, WPA/WPA2, WPA-PSK/WPA2-PSK TKIP/AES Temperature Range:Operating-20 to 70, Storage:-40 to 90 Humidity:Operating 5% to 95% non-condensing, Storage: Max. 90% Support Operating System:for Windows XP/Vista/Linnux/Win 7/Win 8/Win8.1 /Win10