TP-Link TL-WN881ND N300 Wireless N PCI Express Adapter 2.4GHz (300Mbps) 802.11bgn 2x2dBi Detachable Omni Directional Antennas MIMO WPS Wireless N speed up to 300Mbps makes it ideal for video streaming, online gaming and Internet calls MIMO technology with stronger signal penetration strength, wider wireless coverage, providing better performance and stability Easily setup a highly secured wireless link with WPS™ (Wi-Fi Protected Setup) HARDWARE FEATURES InterfacePCI Express(x1) Dimensions ( W x D x H )4.8 x 3.1 x 0.8in. (120.8 x 78.5 x 21.5mm) Antenna TypeDetachable Omni Directional (RP-SMA) Antenna Gain2dBi 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: -68dBm@10% PER 130M: -68dBm@10% PER 108M: -73dBm@10% PER 54M: -73dBm@10% PER 11M: -89dBm@8% PER 6M: -87dBm@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 2x Detachable Omni directional antenna Resource CD Quick Installation Guide System RequirementsWindows 8(32/64bits), Windows 7(32/64bits), Windows Vista(32/64bits), Windows XP(32/64bits) EnvironmentOperating Temperature: 0℃~40℃ (32℉~104℉) Storage Temperature: -40℃~70℃ (-40℉~158℉) Operating Humidity: 10%~90% non-condensing Storage Humidity: 5%~90% non-condensing