Description Features: Brand new and high quality 1200 Mbps 921AC dual-band wireless transmission speed, allowing you to go online, play games, and work faster than others. Say goodbye to waiting! Dual-band 2.4Ghz 300Mbps; 5.8Ghz 867Mbps, you can switch modes at will. USB3.0 receiver, 10 times faster transmission speed, and backward compatible with USB2.0 and USB1.1. Get rid of the traditional single-frequency, single-antenna network card. Dual-band dual-antenna allows you to surf the internet at high speed, with a faster and stronger signal. The Wifi signal will not be blocked by the wall, you can quickly pass through the wall, and at the same time, your desktop computer can also access the internet without a network cable, which is convenient and saves space. Unique design of dust-proof heat dissipation holes, effective heat dissipation while blocking dust intrusion. Package Contents: 1 x 1200 Mbps wireless adapter Specifications: Brand: COMFAST921AC Antenna: 2 Interface: USB3.0 high-speed interface Wireless speed: 2.4G up to 300 Mbps, 5.8G up to 867 Mbps Frequency range: 2.4 GHz~5.8 GHz Wireless standard: IEEE802.11 ac/a/b/g/n/standard Modulation technology: BPSK, QPSK, OFDM (BPSK, QPSK...16-QAM...64-OAM) Security: 64/128/152 digit encryption, WEP encryption, WPA / WPA-PSK, WPA2 / WPA2-PSK encryption and one-button WPS encryption Size: approx. 124x37x11mm/4.88x1.46x0.43in Note: Please allow 0-3cm error due to manual measurement. Make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!