This D-Link DWA-556 XTREME N PCIe Wireless Internet Desktop Adapter is the perfect addition to your computer. With a maximum data rate of 300 Mbps, this adapter provides fast and reliable wireless connectivity. The adapter is compatible with PCI Express ports and comes with three antennas for a stronger signal.The adapter is designed in a plug-in form factor and includes external interfaces for wireless communication. It is a unit type card with no ports. This model is from the brand D-Link and is ideal for those who need a wireless internet connection for their desktop computer.