If you want to enjoy fast and reliable wireless performance, then this Wireless N PCI Express Adapter from TP-Link is something you will need. Speed This adapter provides a speed of up to 150 Mbps, so you can transfer files, watch and stream videos online, and surf the web without any lag. This PCI Express Adapter can fit into any standard PCI express slot. Faster Internet Connection Compared to a standard PCI network card, this adapter delivers increased bandwidth, reliability and more functionality to let you enjoy fast internet connection. Advanced Security With WPA/WPA2 encryption, this PCI Express Adapter lets you browse all you want without having to worry about security. It lets you easily connect a desktop computer to a wireless network and enjoy high-speed internet connection. Antenna If you want to enjoy great flexibility and wide wireless coverage, the antenna of this adapter can be replaced with diverse antennas.