1,The controller processor is for Intel Ethernet Controller I350-AM 2,Data rate supported per port is 10/100/1000 Mbps. 3,Maximum bus speed (x1, encoding rate) is bidirectional 5 Gbps. 4,With 2 X RJ-45 connector: More convenient for you. 5,IEEE support IEEE 803 auto-negotiation. Features: The controller processor is for Intel Ethernet Controller I350-AM 2. Data rate supported per port is 10/100/1000 Mbps. Maximum bus speed (x1, encoding rate) is bidirectional 5 Gbps. With 2 X RJ-45 connector: More convenient for you. IEEE support IEEE 802.3 auto-negotiation. Plug and play: Convenient to use. Specification: Product Name: For Intel I350-AM2 Processor Gigabit PCI-E Dual Port Desktop Network Server Adapter Manufacturer Part Number: I350-T2 Main control chip: I350-AM2 Product Type: Gigabit Ethernet Server Adapter Network technology: 10/100 / 1000Base-T Host interface: PCI Express Interface / Port: RJ-45 x 2 Bus type: PCI Express 2.0 (5GT/s) Bus width: PCI Express runs in x4, x8, x16 slots Stand height: low and full height. Package List: 1 x For Intel i350-AM2 Network card 1 x Half height baffle 1 x Drive CD Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.