The StarTech Dual Port PCI Express Network Card Adapter has two ports with 25.5 Watts of power each. This offers you a network data connection and power on a single cable. This card supports the IEEE 802.3at (Type 1, 2) Power over Ethernet standard, and it has surge protection to prevent system damage. The PCIe network adapter also has a compact design with full- and half-height brackets for less clutter and convenient installation. With two 10/100/1000Mbps PoE RJ-45 ports, this unit features Transmit and Receive Buffer support for a stable connection. This Ethernet gigabit network adapter also comes with crossover detection and auto-correction features.