H!Fiber.com#ad - Support os：windows 7/8/10, slse 11/12, windows server 2008/2012/2016/2019, centos/rhel 6/7/8, freebsd 10/11/12, Ubuntu 16/18/19/20, debian 9/10/11, Vmware ESX/Esxi 6/7, Linux, etc.
Compare to broadcom BCM57810S Ethernet Network Card. Packed with both low profile Bracket and Full-height Bracket that support on Standard and Slim computer/server. Easy to install：coming with a driver cd to install the card. After-sales service: provides 24/7 customer Service, 30 Days Free-returned, 1 Year Free Warranty and Lifetime Technology Support.
10Gtek#ad - Backed by 10gtek 30 days free-returned, for qnaP/Synology user, Driver CD x1, 1 Year Free Warranty and Lifetime Technology Support. Equipped with original intel 82599EN controller which supports I/O virtualization and make the servers more stable.
What you get: 10gtek 10gbe pci-e x8 network card x520-10g-1s-x8 compare to intel x520-da1 x1, 2. 62inch low-profile bracket x1. Driver cd is included natively.
Compatible with windows server 2008/ 2012, Windows7/8/10/Visa, Linux, VMware ESX. Single 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. Ps: due to the particularity in QNAP/Synology system, please contact our customer service before purchase. 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.
Mellanox#ad - Power Efficient. Scales to tens-of-thousands of nodes. World-class cluster, network, and storage performance. I/o consolidation. One adapter for infini band, 10/40 Gig Ethernet or data center bridging fabrics. Virtualization Acceleration.