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Wireless USB Adapter TP-LINK (TL-WN821N) N300BrandTP-LINKStandards and ProtocolIEEE 802.11nIEEE 802.11gIEEE 802.11bAntennaOn-BoardFrequency Range2.400-2.4835GHzWireless Transmit Powerlt;20dBm(EIRP)InterfaceUSB 2.0Data Rates11n: Up to 300Mbps(dynamic)11g: Up to 54Mbps(dynamic)11b: Up to 11Mbps(dynamic)Wireless SecuritySupport 64/128 bit WEP, WPA-PSK..