TP-Link TL-WN781ND N150 Wireless N PCI Express Adapter 2.4GHz (150Mbps) 802.11bgn 1x2dBi Detachable Omni Directional Antennas WPA/WPA2 Up to 150Mbps wireless transmission rate Provides PCI Express interface Advanced secure connection with WPA/WPA2 encryption Bundled utility enables easy management HARDWARE FEATURES Interface PCI Express Dimensions ( W x D x H ) 4.8 x 3.1 x 0.8in. (120.8 x 78.5 x 21.5mm) Antenna Type Detachable Omni Directional (RP-SMA) Antenna Gain 2dBi WIRELESS FEATURES Wireless Standards IEEE 802.11n, IEEE 802.11g, IEEE 802.11b Frequency 2.400-2.4835GHz Signal Rate 11n_ Up to 150Mbps(dynamic) 11g_ Up to 54Mbps(dynamic) 11b_ Up to 11Mbps(dynamic) Reception Sensitivity 130M_ -68dBm@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 Modes Ad-Hoc / Infrastructure mode Wireless Security Support 64/128 bit WEP, WPA-PSK/WPA2-PSK Modulation Technology DBPSK, DQPSK, CCK, OFDM, 16-QAM, 64-QAM OTHERS Certification CE, FCC, RoHS Package Contents Wireless Adapter Detachable Omni directional antenna Resource CD Quick Installation Guide System Requirements Windows 8.1/8(32/64bits), Windows 7(32/64bits), Windows Vista(32/64bits), Windows XP(32/64bits) Environment Operating Temperature_ 0℃~40℃ (32℉~104℉) Storage Temperature_ -40℃~70℃ (-40℉~158℉) Operating Humidity_ 10%~90% non-condensing Storage Humidity_ 5%~90% non-condensing