TP-Link TL-WN821N N300 Wireless N USB Adapter 2.4GHz (300Mbps) 1xUSB2 802.11bgn OnBoard Antenna MIMO technology WPS button Excellent N speed brings best experience for HD video streaming or Internet calls MIMO technology with stronger signal penetration strength, wider wireless coverage, providing better performance and stability Easy wireless security encryption at a push of the WPS button Supports Windows XP / Vista / 7 / 8 / 8.1, Mac OS X 10.7~10.10, Linux HARDWARE FEATURES InterfaceUSB 2.0 ButtonWPS Push Button Dimensions ( W x D x H )2.7x 0.8 x 0.4 in. (69 x 21 x 9.5mm) Antenna TypeOn-Board WIRELESS FEATURES Wireless StandardsIEEE 802.11n, IEEE 802.11g, IEEE 802.11b Frequency2.400-2.4835GHz Signal Rate11n: Up to 300Mbps(dynamic) 11g: Up to 54Mbps(dynamic) 11b: Up to 11Mbps(dynamic) Reception Sensitivity270M: -62dBm@10% PER 130M: -65dBm@10% PER 108M: -68dBm@10% PER 54M: -68dBm@10% PER 11M: -85dBm@8% PER 6M: -88dBm@10% PER 1M: -90dBm@8% PER Transmit Power<20dBm(EIRP) Wireless ModesAd-Hoc / Infrastructure mode Wireless SecuritySupport 64/128 bit WEP, WPA-PSK/WPA2-PSK Modulation TechnologyDBPSK, DQPSK, CCK, OFDM, 16-QAM, 64-QAM OTHERS CertificationCE, FCC, RoHS Package ContentsWireless Adapter One USB extension cable Resource CD Quick Installation Guide System RequirementsWindows 8.1/8(32/64bits), Windows 7(32/64bits), Windows Vista(32/64bits), Windows XP(32/64bits), Mac OS X 10.7~10.10, Linux EnvironmentOperating Temperature: 0℃~40℃ (32℉~104℉) Storage Temperature: -40℃~70℃ (-40℉~158℉) Operating Humidity: 10%~90% non-condensing Storage Humidity: 5%~90% non-condensing