Equipped with original Intel 82576 controller chip which supports Intelligent Offloads and make the servers more stable. Compare to Intel E1G42ET. Compatible with Windows Server 2003/ 2008/ 2012, Windows7/8/10/Visa/XP, Linux, VMware ESX. (Does not support VMware ESXi 7.0 or above.) Dual copper RJ45 ports let you connect to Category-5 and up to 100m for meeting the demands of data center environments. PCI Express* 2.0. 2.5 GT/s X1 Lane. You also can download it from Intel website. With profile bracket and additional low profile bracket that makes it easy to install the card in a small form factor/low profile computer case/server.NOT support hot swaping. What You Get: 10Gtek 82576-2T-X1 1.25GbE PCI-E X1 Network Card (compare to Intel E1G42ET) x1, Low-profile Bracket x1. Backed by 10Gtek 30 Days Free-returned and Lifetime Technology Support.