10Gtek 10Gb PCI-E NIC Network Card with Intel 82599ES, Dual SFP+ Ports | Compare to Intel X520-DA2(E10G42BTDA) PCI Express Ethernet LAN Adapter, Support Windows Server/Linux/VMware, Low Latency

Key features

• 10G network card works seamlessly with Windows Server 2003 / 2008 / 2012, Windows 7 / 8 / 10 / Vista, Linux, and ESX / ESXi systems. It also supports industry-standard Storage over Ethernet protocols including iSCSI, FCoE, and NFS. *Note: Windows 11 compatibility is achievable only when the dedicated Windows 10 driver is installed properly — refer to our main product image for step-by-step installation guidance.
• Powered by a genuine high-quality original Intel 82599ES controller, this NIC natively supports I/O virtualization, effectively reducing CPU overhead and delivering consistently more reliable performance to keep your server setup running smoothly without unexpected drops or lag.
• Built exclusively for 10 Gigabit speeds and does not support 1G / 2.5G / 5G connections. Its dual SFP+ ports lets you pair it with 10G SFP+ modules, DAC cables or AOC cables to fully meet the high-throughput demands of data center environments. The PCI-E X8 lane design works perfectly in both PCI-E X8 and PCI-E X16 slots for maximum installation flexibility.
• Include both a standard full-height profile bracket and an extra low-profile bracket in the package, so you can easily set up this 10G NIC in small form factor PCs, low-profile server cases and other compact builds. Important note: This network adapter does NOT support hot-swapping operation.
• Your purchase will include: 1 x 10G-X520-2S 10GbE PCI-E X8 Network Card, 1 x Low-Profile Bracket. You will also get 30-day free return service, 3-year manufacturer warranty, and lifetime professional technical support. Special Reminder: Due to hardware compatibility particularities with QNAP and Synology NAS devices, we strongly recommend QNAP/Synology users contact our support team before placing your order.