Server Network Cards and Adapters
Server network cards add faster or additional ports to a server, workstation or homelab node. They are an inexpensive way to move a network from 1GbE to 10GbE or beyond. Common families include Intel X520, X540, X550 and X710 cards and Mellanox ConnectX cards, in SFP+, SFP28 and RJ45 10GBASE-T versions, plus OEM versions made for Dell, HPE and Lenovo servers. Before you order, check the port type against your switch or cabling, the PCIe generation and lane count against your slot, and the bracket height, since many server pulls ship with low profile brackets. Driver support also matters: most of these families are supported by Linux, Proxmox, TrueNAS and VMware, but support for older cards varies by release. Adapters are tested for link and negotiation before listing; ask us about bracket height if a listing does not say.
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Tell us what you needServer Network Cards and Adapters: common questions
Do OEM branded network cards work in other servers?+
Usually yes. Dell and HPE versions of Intel and Mellanox cards generally run in standard PCIe slots with the normal drivers, though some carry OEM firmware. Some OEM mezzanine cards fit only their own servers.
SFP+ or 10GBASE-T: which should I pick?+
SFP+ uses optics or direct attach cables and runs cooler with lower latency. 10GBASE-T uses regular copper Ethernet cabling, which is easier if your building is already wired. Match whatever your switch uses.
Will a low profile card fit my full height slot?+
The card itself fits; only the bracket differs. Swap it for a full height bracket, or ask us whether one is available for the card.