Best 10GbE Server Network Adapters
SFP+ and 10GBASE-T PCIe network adapters that state 10GbE in the manufacturer's own title — read alongside how to match the media, the slot and the controller before it goes on a server.
10GbE server network adapters in stock at Uniqcli
How to choose →A curated selection with live pricing — in-stock lines first, then back-ordered lines with a typical lead time. Every line is sourced through US distribution and screened for NDAA §889 status before checkout, with TAA verified on request.
- AddOnAddOn HP 700699-B21 Comparable 10Gbs Dual Open RJ-45 Port 100m PCIe x8 Network Interface Card - 100% compatible and guaranteed to work700699-B21-AO
$126.00
$115.92
41 in stock - AddOnAddOn HP 700759-B21 Comparable 10Gbs Dual Open SFP+ Port Network Interface Card with PXE boot - 100% compatible and guaranteed to work700759-B21-AO
$126.00
$115.92
31 in stock - Axiom Memory SolutionsAxiom 10Gbs Single Port SFP+ PCIe x8 NIC Card for QLogic - QLE8240-CU-CK - 10Gbs Single Port SFP+ PCIe x8 NIC CardQLE8240CUCK-AX
$160.00
$137.95
1 in stock - Axiom Memory SolutionsAxiom 10Gbs Single Port SFP+ PCIe x8 NIC Card for QLogic - QLE8360-CU-CK - 10Gbs Single Port SFP+ PCIe x8 NIC CardQLE8360CUCK-AX
$160.00
$137.95
1 in stock - StarTech.comStarTech USB4 to Ethernet Adapter, 10GbE, Multi-Gigabit, Thunderbolt Compatible, 10GBASE-T/5G/2.5G NIC, USB4 Cable, Windows/Mac, TAA - Adds multi-Gigabit RJ45 port to a USB-C (USB4 Gen 4x4 TB5/TB4/TB3 compatible) computer, enabling connection to100Mbps, 1G, 2.5G, 5G/10G networks - Up to 10Gbps with ASMedia ASM2464PDX & Marvell AQC113 chipsets - Detachable 19.6in (50cm) USB4 cableUSB4-10GBE-ETHERNET
$179.99
$165.59*
1 in stock - AddOnAddOn QLogic QLE8240-CU-CK Comparable 10Gbs Single Open SFP+ Port Network Interface Card - 100% compatible and guaranteed to workQLE8240-CU-CK-AO
$225.00
$207.00
7 in stock - AddOnAddOn QLogic QLE8360-CU-CK Comparable 10Gbs Single Open SFP+ Port Network Interface Card - 100% compatible and guaranteed to workQLE8360-CU-CK-AO
$225.00
$207.00
7 in stock
TRENDnet 10G RJ-45
TRENDnet
TRENDnet 10 Gigabit PCIe Network Adapter, Converts A PCIe Slot Into A…
TEG-10GECTX
A TRENDnet 10 Gigabit PCIe network adapter with a 10GBASE-T RJ-45 port — a low-cost single-port copper card for a server or workstation moving off gigabit onto existing Cat6a runs.
$90.89Back-orderedTRENDnet 10G SFP+
TRENDnet
TRENDnet 10 Gigabit PCIe SFP+ Network Adapter, TEG-10GECSFP, Convert A…
TEG-10GECSFP
A TRENDnet 10 Gigabit PCIe SFP+ network adapter that converts a PCIe slot into a 10G SFP+ slot — the fiber or direct-attach counterpart for a switch that presents SFP+.
$90.89Back-orderedSonnet Presto 10GBASE-T
Sonnet Technologies
Sonnet Presto 10Gigabit Ethernet Card
G10E-1X-E3
A Sonnet Presto 10Gigabit Ethernet card, single-port 10GBASE-T over twisted pair — an economical copper 10G card for a workstation or a small server.
$124.44Back-orderedQNAP 10G single RJ-45
QNAP Systems
QNAP 10Gigabit Ethernet Card
QXG-ES10G1T
A QNAP 10Gigabit Ethernet card with a single 10GBASE-T RJ-45 port on PCIe 3.0 x4 — a copper 10G adapter that pairs cleanly with a NAS or a small server.
$125.05Back-orderedQNAP dual 10G RJ-45
QNAP Systems
QNAP QXG-10G2T Dual-port, 5-speed 10 GbE (RJ45) Network Expansion Card
QXG-10G2T
A QNAP QXG-10G2T dual-port, 5-speed 10 GbE (RJ-45) network expansion card on PCIe 3.0 x4 — multi-gigabit copper with two ports for a bonded or redundant link.
Request pricingQNAP USB-C 10G adapter
QNAP Systems
QNAP QNA-UC10G1T 10Gigabit Ethernet Adapter
QNA-UC10G1T
A QNAP QNA-UC10G1T 10Gigabit Ethernet adapter over USB Type-C with a 10GBASE-T port — a 10G link for a laptop or a machine with no free PCIe slot.
$284.77Back-orderedAddOn single SFP+
AddOn
AddOn Intel E10G41BFSR Comparable 10Gbs Single SFP+ Port 300m Network…
E10G41BFSR-AO
An AddOn single SFP+ 10Gbs network interface card with a 10GBASE-SR transceiver included, Intel E10G41BFSR comparable — a short-reach multimode fiber 10G card ready to plug in.
$207.00In stockAddOn ConnectX-4 SFP+
AddOn
AddOn Mellanox MCX4121A-XCAT ConnectX-4 Lx EN Adapter Card 10Gbe Dual…
MCX4121A-XCAT-AO
An AddOn Mellanox MCX4121A-XCAT ConnectX-4 Lx dual-port 10GbE SFP+ adapter on PCIe x8 with tall and short brackets — a dual-port datacenter card for a bonded or redundant SFP+ link.
$353.28Back-orderedAddOn dual 10GBASE-T
AddOn
AddOn 10Gbs Dual RJ-45 Port 100m PCIe 3.0 x8 Network Interface Card
ADD-PCIE3-2RJ45-10G
An AddOn dual RJ-45 10Gbs network interface card on PCIe 3.0 x8 — two 10GBASE-T copper ports for a server that needs redundant or aggregated copper 10G.
$572.70In stockLenovo TS SFP+ LOM
Lenovo
Lenovo ThinkSystem 10Gb 2-port SFP+ LOM
7ZT7A00546
A Lenovo ThinkSystem 10Gb 2-port SFP+ LOM card, 10GBASE-X over optical fiber — a dual-port SFP+ adapter matched to Lenovo ThinkSystem servers.
$175.08Back-orderedLenovo TS 10GBASE-T
Lenovo
Lenovo ThinkSystem 10Gb 2-Port Base-T LOM
7ZT7A00548
A Lenovo ThinkSystem 10Gb 2-Port Base-T LOM card, dual 10GBASE-T over twisted pair — the copper counterpart for a ThinkSystem server on structured cabling.
$268.99Back-orderedStarTech dual-port 10G
StarTech.com
StarTech 2-Port 10Gbps PCIe Network Adapter Card, Network Card…
ST10GSPEXNDP2
A StarTech 2-port 10Gbps PCIe network adapter card with jumbo-frame support — a dual-port 10G NIC for a PC or server that needs two links from one slot.
$155.47Back-orderedStarTech dual X550
StarTech.com
StarTech Dual Port 10G PCIe Network Adapter Card
ST10GPEXNDPI
A StarTech dual-port 10G PCIe adapter on the Intel X550-AT controller, 10GBASE-T multi-gigabit copper — two RJ-45 ports on a known Intel controller for a server refresh.
$446.03Back-orderedAxiom single 10GBASE-T
Axiom Memory Solutions
Axiom 10Gbs Single Port RJ45 PCIe 3.0 x4 NIC Card for Intel
X550T1-AX
An Axiom single-port RJ-45 10G NIC on PCIe 3.0 x4, built on the Intel X550-T1 10GBASE-T controller — a single-port copper 10G card for a host connection.
$313.03In stockAxiom dual SFP+ X710
Axiom Memory Solutions
Axiom 10Gigabit Ethernet Card
540-BBVL-AX
An Axiom 10Gigabit Ethernet card on PCIe 3.0 x8 with the Intel X710 controller and dual SFP+ optical-fiber ports — a dual-port fiber 10G adapter for a server on an SFP+ switch.
$421.80In stockNVIDIA ConnectX-3 10G
NVIDIA
Mellanox ConnectX-3 10Gigabit Ethernet Card
MCX354A-FCBT
A Mellanox ConnectX-3 10Gigabit Ethernet card on PCIe x8 with a QSFP port and 10GBASE-X media — a proven ConnectX adapter for a virtualization or storage host.
$243.43Back-orderedMore network adapters in the Uniqcli catalog
See all 1,366 network adaptersMore from across this category. In-stock lines lead, and a back-ordered line carries the same estimated availability its product page does — with live pricing throughout, NDAA §889 screening before checkout and TAA verified on request.
- Axiom Memory SolutionsAxiom 10Gbs Quad Port SFP PCIe 3.0 x8 NIC Card - 10Gbs Quad Port SFP+ PCIe 3.0 x8 NIC Card - TAA CompliantAXG98797
$1,536.67
$609.56*
1 in stock - Axiom Memory SolutionsAxiom PCIe 4.0 x16 25Gbs Fiber Network Adapter - PCI Express 4.0 x16 - 25 Gbit/s Data Transfer Rate - Intel - 4 Port(s) - Optical Fiber - Full-height/half-Height Bracket Height - 25GBase-SR, 25GBase-LR, 10GBase-SR, 10GBase-LR, 1000Base-SX, 1000Base-LX, 25GBase-CR - SFP28 - Plug-in CardPCIE4-4SFP28-AX
$1,293.85
$1,112.01
6 in stock - AddOnAddOn 10Gbs Quad Open SFP+ Port PCIe 3.0 x8 Network Interface Card - 80 Gbit/s Data Transfer Rate - Intel XL710 - Multi-mode, Single-mode - SFP+ADD-PCIE-4SFP+
$1,687.00
$1,552.04
22 in stock
Need pricing on 10GbE server network adapters?
Tell us where to reach you and a Uniqcli specialist will follow up by email with current pricing, availability and lead time for the quantities you need — including parts that aren’t shown on this page.
Buying for an organization or for yourself — both work. No payment up front.
A 10GbE network adapter moves a server, a NAS or a workstation off the gigabit link that has quietly become the bottleneck — storage traffic, backups, virtualization and video all fill a 1 Gb pipe long before the CPU is busy. Every card on this page states 10GbE, 10 Gigabit or a 10GBASE media type in the manufacturer's own catalog title, so the speed claim is verifiable per part rather than implied. They are PCI Express add-in cards and a few USB-C and Thunderbolt adapters, built on the controllers a server room already knows — Intel X550 and X710, Broadcom, Mellanox ConnectX — so the driver and the management story are familiar.
The first real choice is the media, because it decides the cabling. A 10GBASE-T card takes an RJ-45 and runs over Cat6a copper, which is the low-friction fit when the runs are short and the switch has copper ports — it reuses the structured cabling and asks nothing new of the rack. An SFP+ card takes a pluggable transceiver or a direct-attach copper cable, which is what a datacenter switch usually presents, and it gives you fiber for the longer or the cross-room runs and DAC for the short in-rack ones. Match the card to what the switch actually offers, and count the ports — single-port for a host, dual-port for a bonded or redundant link.
After the media, the fit is mechanical and it is easy to get wrong. Read the PCIe generation and lane width the card needs against the slot it will sit in, because a card starved of lanes will not reach line rate, and read the bracket — many server cards ship low-profile for a 1U or 2U chassis and some ship full-height. Confirm the controller against the driver your platform supports, and where the purchase order names it, read the TAA status on the exact part. Uniqcli can put the adapters, the transceivers or DAC cables and the brackets on one quote so the link is specified as a whole rather than assembled from three orders.
Buyer's checklist
How to choose a 10GbE server network adapter
- Match the media to the switch first: 10GBASE-T (RJ-45 over Cat6a) reuses copper structured cabling, while SFP+ takes a transceiver or a direct-attach cable and is what most datacenter switches present.
- Count the ports you need — single-port for a straight host connection, dual-port for a bonded (LACP) or redundant link, quad-port where one card feeds several segments.
- Read the PCIe generation and lane width the card requires (for example PCIe 3.0 x8) against the slot it will occupy, so the card is not starved of bandwidth below line rate.
- Confirm the bracket height against the chassis: many server adapters ship low-profile for 1U/2U and some full-height for a tower or workstation — the wrong bracket does not fit.
- Check the controller against your platform's supported drivers and any offload features you rely on (iSCSI, RDMA, SR-IOV) so the card's capabilities are actually usable.
- For an SFP+ card, plan the transceiver or DAC cable and the reach at the same time — the card is only half the link, and the optic sets the distance.
- Where the purchase order names TAA, read it on the exact part number — several of these adapters state TAA in the manufacturer's own title and others do not.
10GBASE-T copper versus SFP+: pick by what the switch offers
The media decision drives everything downstream, and it is really a question about the switch. A 10GBASE-T card presents an RJ-45 and runs over Cat6a copper up to about 100 meters, which is the pragmatic choice when the switch has copper 10G ports and the runs are inside a building — it reuses the cabling that is already pulled and needs no transceiver to buy or stock. The tradeoff is power and latency: 10GBASE-T draws more per port and adds a little latency versus fiber, which rarely matters for general server traffic but can for the most sensitive workloads.
An SFP+ card is the datacenter-native form. It takes a pluggable module, so one card can run a short direct-attach copper cable to a top-of-rack switch or a fiber transceiver across the room, and it is what most 10G datacenter switches actually present on their faceplate. The card and the optic are a pair — the reach is set by the transceiver, not the card — so budget them together. If the switch is copper, buy 10GBASE-T and be done; if it is SFP+, buy the SFP+ card and choose DAC for in-rack and fiber for the longer hops.
Slot, bracket and controller: the fit that decides line rate
A 10GbE card only reaches its rated speed if the slot feeds it enough PCIe lanes, so read the card's requirement — commonly PCIe 3.0 x8 for a dual-port — against the physical slot and the lanes that slot is actually wired for, which on some boards is fewer than the connector suggests. A card in a lane-starved slot will link and pass traffic but never hit line rate under load, and that is a frustrating problem to diagnose after the fact. The bracket is the other mechanical fact: server adapters commonly ship low-profile for a 1U or 2U chassis, and a full-height-only card will not seat in a short slot, so confirm the bracket for the box.
The controller is what your operating system and your management tooling see, so match it to what the platform supports. Intel X550 and X710, Broadcom and Mellanox ConnectX are the families a server room already runs drivers for, and the offloads you depend on — iSCSI boot, RDMA, SR-IOV for virtualization — are controller features to confirm on the part, not assume from the speed. Read the exact model on the exact part number, confirm the driver path, and where TAA is required, read that on the part too. Uniqcli can quote the adapters, the transceivers or DAC cables and the brackets together so the whole link is specified at once.
FAQ
Common questions
- What is the difference between 10GBASE-T and SFP+ 10GbE adapters?
- The media, and it should follow the switch. A 10GBASE-T card presents an RJ-45 and runs over Cat6a copper up to about 100 meters, reusing structured cabling — the low-friction choice when the switch has copper 10G ports. An SFP+ card takes a pluggable module, so it runs a direct-attach copper cable in-rack or a fiber transceiver across the room, and it is what most datacenter switches present. Match the card to what the switch actually offers; for SFP+, budget the transceiver or DAC cable with the card because the optic sets the reach.
- Will a 10GbE card reach full speed in any PCIe slot?
- Only if the slot gives it enough lanes. A 10GbE adapter states the PCIe generation and lane width it needs — commonly PCIe 3.0 x8 for a dual-port card — and a slot that is physically longer but wired for fewer lanes will let the card link and pass traffic without ever reaching line rate under load. Read the card's requirement against the lanes the specific slot is actually wired for on that board, and confirm the bracket height (many server cards are low-profile for 1U/2U) so the card both fits and performs.
- Do I need a specific switch to use a 10GbE server adapter?
- You need a switch port that matches the card's media and speed. A 10GBASE-T card connects to a copper 10G switch port over Cat6a; an SFP+ card connects to an SFP+ switch port with a matching transceiver or a direct-attach cable. Many 10GBASE-T adapters are multi-gigabit and will also negotiate 1G/2.5G/5G, which eases a phased upgrade, but to actually run at 10G both ends have to support it. Buy the adapter to match the switch you have, or plan the switch and the adapters together.
- How do I confirm the controller and driver support before ordering?
- Read the controller model in the manufacturer's own title — Intel X550 or X710, Broadcom, Mellanox ConnectX and so on — and check it against your operating system's supported driver list and any offloads you rely on, such as iSCSI boot, RDMA or SR-IOV. Those are controller features, so confirm them on the exact part rather than assuming them from the 10G speed. It is a per-part fact, and reading it on the part number you intend to order is the reliable path.
- Can business, government and education buyers order these?
- Every line Uniqcli quotes is sourced through US distribution and screened for TAA country-of-origin and NDAA §889 status before checkout — with documentation tied to the specific part number, not a product family.
Need 10GbE server network adapters pricing?
Send a bill of materials or part numbers — we confirm stock and a below-market total, with TAA verified on request. No payment up front.