brand new and high qualityFeature:1300Mbps 11AC Dual Frequency wireless transmission speed,Let you go online, for play games and work faster than others, bid farewell to the troubles of waitingDual band 2.4Ghz 400Mbps;5.8Ghz 867Mbps,You can switch modes at willUSB3.0 receiver, 10 times faster transmission speed, and for USB2.0 and USB1.1.Get rid of the traditional single frequency single antenna network- card,Dual Band Dual Antenna Let you surf the Internet at high speed, with faster and for stronger signalThe Wifi signal will not be blocked by the wall, you can quickly pass through the wall, and at the same for time, your desktop computer can also access the Internet without a network- cable, which is convenient and does not occupy spaceUnique design of dust-proof heat dissipation holes, efficient heat dissipation while blocking dust intrusionSpecifications:Chipset: RTL8812BUAntenna: 2Interface: USB3.0 high speed interfaceWireless speed: 2.4G up to 300Mbps,5.8G up to 867MbpsFrequency range: 2.4 GHz~5.8 GHzWireless standard:IEEE802.11 acabgnstandardModulation technology: BPSK, QPSK, CKK, OFDM (BPSK, QPSK...16-QAM...64-OAM)Security: 64128152 digit encryption, WEP encryption, WPA WPA-PSK, WPA2 WPA2-PSK encryption, and one-key WPS encryptionOperating temperature: -20C to 40CStorage temperature: -40C to 70COperating humidity: 10% to 90%RH(non-condensing)Storage humidity: 5% to 90%RH(non-condensing)Supported Operating Systems: For Windows XPVistaWIN 7WIN 8 operating system, etc.Size: 137x41x12mm5.39x1.61x0.47inNote:Transition:1cm=10mm=0.39inchPlease allow 0-3cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Includes:1 x 1300Mbps wireless adapter1 x C-D drive1 x English user manual