Equipped with high quality controller which supports I/O virtualization and make the servers more stable. | Compatible with Windows Server 2003/ 2008/ 2012, Windows7/8/10/Visa, Linux, VMware ESX. | Dual SFP+ ports let you connect to 10 Gigabit SFP+ module/DAC/AOC for meeting the demands of data center environments. PCI-E X8 Lane is suitable for both PCI-E X8 and PCI-E X16 slots. | Driver CD is included natively. 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. | What You Get: 10Gtek 10GbE PCI-E X8 Network Card X520-10G-2S-X8 x1, Driver CD x1, Low-profile Bracket x1. Backed by 10Gtek 30 Days Free-returned, 1 Year Free Warranty and Lifetime Technology Support. PS: Due to the particularity in QNAP/Synology system. For QNAP/Synology user, please contact our customer service before purchase.