10Gtek 10Gb PCI-E NIC Network Card, Dual SFP+ Port,with Intel 82599ES Controller,PCI Express Ethernet LAN Adapter Support Windows Server/Linux/VMware,Compare to Intel X520-DA2(E10G42BTDA),2-Pack

Additional Details from the Manufacturer

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More features

• Equipped with high quality original Intel 82599ES 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.(Note that this card can be used with Windows 11, but it needs to be manually set up. If you buy it for Windows 11, please contact us for installation guide before using.)
• Supports 1G/10G, not support 2.5G/5G; 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.
• 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 10GbE PCI-E X8 Network Card X520-10G-2S (compare to Intel X520-DA2 ) x1, Low-profile Bracket x1. Backed by 10Gtek 30 Days Free-returned, 3 Year Free Warranty and Lifetime Technology Support. PS: Due to the particularity in QNAP/Synology system, for QNAP/Synology users, please contact our customer service before purchase.