Support on Standard and Slim computer/server /Workstation Ethernet Controller: Base on for-original 82599ES Controller, which supports Single Root I/O virtualization and improve servers stability. Compare to for X520-DA2( E10G42BTDA). Support OS:for 7/8/10/11, for Server 2008/2012/2016/2019, for Linux, for Centos/RHEL 6/7/8, for 16/18/19/20, for Debian 9/10/11, for FreeBSD 10/11/12, for ESX/Esxi 6/7, for SLSE 11/12,etc, Os SFP+ PCI-E NIC: 10Gb Dual SFP+ Ports, apply to 10G SFP+ module/ (1M) /. PCI Express 2.0. 5.0 G T/s x 8 , compatible with PCIE X8, X16 Slot. Color:As Shown Material:Plastic+Metal Package Contents: 1 * Ethernet Network Adapter 1 * Short Baffle 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.