The TL-WN781ND was designed to establish a wireless connection from a server or a desktop to the backbone via the PCI Express interface. The Wireless Lite N PCI Express (x1) Adapter TL-WN781ND is compatible with PCI Express slots x1, x4, x8, and x16. The TL-WN781ND supports popular standards IEEE 802.11n, 802.11g and 802.11b. This ensures that the card can be easily operated with 802.11b/n/g-Geräten. Based on the IEEE 802.11e standard supports WMM map. WMM provides QoS (Quality of Service) and then prioritizes traffic. WMM Power Save ensures lower energy consumption. The TL-WN781ND has a QSS button. About this a secure and encrypted connection is established to a wireless router or access point. The external and removable antenna can be replaced according to various environments flexibly. The device comes with a CD that will help set up the wireless connection.