Thickened gold finger gold plating process, , anti-, wear-resistant, good stability. To good contact, it can effectively reduce packet loss and improve data transmission rate. High Compatibility Compatible with 7, 8.X, 10 SERVER 2008 R2, 2012, 2016, 2019; LINUX 2.6.31 TO 4.11.X VERSIONS ONLY. chips are used to make the speed faster and more stable. Stable performance and powerful functions. Stable work and longer service life. Type: Gigabit LAN Main chip: RTL8111H Bus type: M.2 (B-KeyM-Key) Transmission rate: 10/100/1000IMbps Full duplex/half duplex: full duplex/half duplex adaptive Network connection type: RJ45 LED indicator: LINK/ACT (connection work) Applicable models: desktop Network Standards: IEEE 802.3az Energy-Efficient Ethernet, IEEE 802.3x Flow Control, 802.1g VLAN Tagging, 802.1p Layer 2 Priority Encoding 7, 8.x, 10 color:Black Material:PCB Package Contents: 1 x Main Card 1 x RJ45 Network Cable Terminal Only the above package content, other products are not included. Note: Light 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.