TP-LINK TL-WN881ND. Connectivity technology: Wireless, Host interface: PCI-E, Interface: WLAN. Data transfer rate (max): 300 Mbit/s. Networking standards: IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, Modulation: 16-QAM, 64-QAM, DBPSK, DQPSK, OFDM, Frequency band: 2.400 - 2.4835 GHz. Wireless LAN type: 802.11b, 802.11g, 802.11n, WLAN data transfer rates supported: 11, 54, 150, 300 Mbit/s. Antenna connector type: RP-SMA, Gain: 2 dBi