1. PCI-E 2.5G network card, PCIe to RJ45 Gigabit Ethernet adapter, 2.5G high-speed transmission 2. RTL8125BG chip, with strong speed. 3. Equipped with standard RJ45 network interface, the data transmission rate is up to 100/1000M/2.5Gbps. 4. Compatible with multiple , supporting Win7/8/10/11 and Linux. 5. Thickened gold finger is used for more contact and more stable transmission. Reduce problems such as hardware contact failure and sudden disconnection. Product name:PCI-e 2.5G Network Card Main control chip: RTL8125BG Bus interface: PCI-EX1 (compatible with X1/X4/X8/16) Extension interface: RJ-45 Interface rate: 2.5Gbps Transmission rate: 100/1000/2500Mbps Compatible system: Windows/Linux/ESXi/ROS Product size: 65 x 53mm Colour:black Material:PCB+Metal Package Contents: 1 x PCI-e 2.5G Network Card 1 x half height beze 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.