Thickened gold-plated gold fingers, more reliable contact, reducing hardware contact failures, resulting in sudden disconnection and other problems Do not install on the pci interface Support PCI-E X1 X4 X8 X16 interface Color: As Shown Material: PC+Metal<br><br>Main control chip: RTL8125BG Bus interface: PCI-EX1 (compatible with X1/X4/X8/16) Expansion interface: RJ-45 Interface rate: 2.5Gbps mission rate: 100/1000/2500Mbps Compatible system: /Linux/ESXi/RoS<br><br>Package Contents: 1 x Gigabit network card 1 x Short iron piece<br><br>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.