LAN CARD Tp-Link 781ND LAN CARD is built in 2 Detachable Antenna , 802.11n, 802.11b/g wifi Standard, More features include: Provides PCI Express interface, Advanced secure connection with WPA/WPA2 encryption, Stable Wireless Connection Ensure Your Surfing Experience, Great Flexibility with Detachable Antenna, 0°C to 40°C Operating temperature, Windows XP/Vista/7/8/8.1/10(32/64bits) System Requirements, 64/128 bit WEP, WPA-PSK/WPA2-PSK Wireless Security, 0°C to 40°C Operating temperature. Once connected, you can transfer data, stream media, and send SMS messages.