1. 2.5Gbps network card has 2 ports 2.5 gigabit, 2. Using Realtek RTL8125BG chip, 3. Compatible with 1Gbps/100M/10M automatic negotiation, 4. Support standard Cat5e or above UTP, 5. Up to 100 m (328 ft) transmission distance Type:WIRED Transmission Rate:10/100/1000Mbps Kind:External Adapter Socket:RJ45 Interface Type:PCI Express Application:Desktop Applicable Network Type:Gigabit Ethernet Lan Transmission Rate:1000M Ethernet Compatible with PCIe slots X1,X4,X8,X16, Default with standard bracket, including low bracket, Support a of installation modes, such as PC, server, client, workstation, NAS, etc. (PCI slot not supported) Support for 10/8.1/8 Server2012 7, 2008, for Linux, Supports PXE, automatic MDIX, IEEE 802.1Q VLAN tagging, IEEE 802.3BZ (2.5GBASE-T), full-duplex flow control (IEEE 802.3x), IEEE 802.1P Layer 2 priority coding, and giant frame 16Kbytes Colour:Black Material:abs Package Contents: 1 * Gigabit network card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.