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Mellanox ConnectX-3 Pro 40Gigabit Ethernet Card
- Weight: 0
- Model #: MCX354A-FCCT
- $559.00
- $105.00 –
- Save: 81%
- More options from $105.00 - $208.00
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- $22.55 –
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IBM Emulex Dual Port 10 GbE SFP+ Embedded VFA IIIr For IBM System x
- Package Contents: Emulex Dual Port 10 GbE SFP+ Embedded VFA IIIr For IBM System x Quick Install Guide Warranty Information And Important Notices Flyer Documentation CD
- Parts: 1 Year
- Model #: 00Y7730
- $464.20 –
- More options from $462.69 - $465.00
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Gigabit Dual NIC with Intel 82576 Chip, 1Gb Network Card Compare to Intel E1G42ET NIC, 2 RJ45 Ports, PCI Express 2.1 X1, Ethernet Card with Low Profile for Windows/Windows Server/Linux
- Model #: 6476073729997ASDFA11181099
- $54.79 –
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- $987.67 –
- More options from $987.67 - $1,056.00
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Dual PCIe Gigabit Network Card 1000M PCI Express Ethernet Adapter with Intel 82575/82576 Two Ports LAN NIC Card for Support PXE for Windows/Windows Server/Linux/Freebsd/DOS with Low Profile
- Model #: 6476073730092ASDFA11581139
- $71.04 –
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- Model #: P28787-B21
- $739.39 –
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- Brand: Intel
- Model #:
- $26.02 –
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LR-LINK PCIe x4 Network Adapter, Six-Optical Gigabit SFP Ethernet Network Card
- Brand: ClearLinks
- Standards: IEEE802.3
- Speed: 1 gigabits_per_second
- Connectors: IEEE802.3z 1000BASE-X Gbit/s Ethernet IEEE 802.3x Full Duplex and flow control IEEE 802.3ad Link aggregation for parallel links IEEE 802.1Q VLAN IEEE 1588 IEEE 802.3az - Energy Efficient Ethernet (EEE), 1 gigabits_per_second
- Model #: LRES1006PF-6SFP
- $299.00 –
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- Brand: Intel
- Model #:
- $22.55 –
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- Electrical Outlet Plug Type: 10Gigabit Ethernet Card
- Model #: 684218-B21
- $71.01 –
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Refurbished Emulex LPE35002-S4 host bus adapter PCIe 4.0 x8 32GB Fibre Channel 2 Port Gen 7
- Model #: LPE35002-S4
- $788.00 –
- More options from $788.00 - $799.00
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PCI Express PCI-E Wireless Network Card 1000Mbps PCI-E Gigabit Network Card 10/100/1000M RJ45 Ethernet Network Card
- Model #: 000000056938
- $34.46 –
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PCIe x4 Quad-port POE+ 2.5G Vision Framer Grabber Card(1ntel I226 Based)
- Brand: ClearLinks
- Standards: Ethernet
- Speed: 2500 megabits_per_second
- Connectors: 1x Low-profile Bracket, Ethernet, 2500 megabits_per_second
- Model #: LRES2058PT-POE
- $139.99 –
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PCIe x1 Dual-port 100M SFP Ethernet Network Adapter (1ntel 82580)
- Brand: Generic
- Standards: IEEE802.3
- Speed: 100 megabits_per_second
- Connectors: IEEE 802.3x IEEE 802.3u IEEE 802.3az IEEE 802.3ab, 100 megabits_per_second
- Model #: LREC9042PF-2SFP
- $139.00 –
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X-MEDIA XM-NA4811 PCI-E 2.5Gbps Gigabit PCI Express PCIe Network Adapter Card
- Model #: XM-NA4811fli
- $45.98 –
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Vszerda PCIe 1 to 3 PCI Express 1X Slots Riser Card Mini ITX to External 3 PCI-e Slot Adapter PCIe Port Multiplier Card
Limited time offer, ends 10/17
- Brand: Vszerda
- Part Number: N21532
- Interface: PCI
- BUS: pci
- Model #: JMT0003D
- $62.29 –
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Vszerda PCIe 1 to 4 PCI Express 1X Slots Riser Card Mini ITX to External 4 PCI-e Slot Adapter PCIe Port Multiplier Card
Limited time offer, ends 10/17
- Brand: Vszerda
- Part Number: N21533
- Model #: N21533F
- $55.28 –
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Vszerda PCI-E 4X to PCI-E 5.0 MCIO 4X 38Pin SFF-TA-1016 Adapter Mini Cool Edge IO Female PCI Express Card
Limited time offer, ends 10/17
- Brand: chenyang
- Part Number: CY-SF-085
- Features: Personal Computer
- Weight: 8 grams
- Model #: SF-085
- $38.18 –
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PCIe x8 Dual-port 40G QSFP+ Ethernet Network Adapter (MellanoX ConnectX-3)
- Brand: ClearLinks
- Standards: IEEE802.3
- Speed: 40 gigabits_per_second
- Connectors: IEEE 802.3by-2016 25GBASE-X Ethernet IEEE 802.3ae 10GBASE-X Ethernet IEEE 802.3z 1GBASE-X Ethernet IEEE 802.3apIEEE 802.3ad IEEE 802.1QIEEE 802.1Qaz IEEE 802.1Qbb IEEE 802.1Qbg IEEE 1588 PTP v2 IEEE 802.3az - Energy Efficient Ethernet, 40 gigabits_per_second
- Model #: LRES1028PF-2QSFP+
- $149.90 –
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HighZer0 Electronics BE211 WiFi 7 R2 Card | Tri-Band Wi-Fi | Up to 5.8 Gbps | CNVio3 M.2 Wifi Card for PC | Supports Bluetooth 6 | Requires Intel 14th+ Gen CPU Windows 10/11, Linux | BE211NGW
- Brand: HighZer0 Electronics
- Windows Vista: Windows 10, Windows 11, Linux
- Dimensions: BE211
- Parts: 30 Days
- Model #:
- $51.47 –
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PCIe3.0 x8 Network Adapter MCX4121A-XCAT Compatible with Mellanox CX4 Lx EN 10G Ethernet NIC Dual SFP28 Port Support RDMA
- Brand: ClearLinks
- Standards: IEEE802.3
- Speed: 10 gigabits_per_second
- Connectors: IEEE 802.3ae 10 Gigabit Ethernet IEEE 802.3az Energy Efficient IEEE 802.3ap IEEE 802.3ad IEEE802.1AX IEEE 802.1Q, 802.1P VLAN IEEE 802.1Qaz (ETS) IEEE 802.1Qbb (PFC) IEEE 802.1Qbg IEEE 1588v2, 10 gigabits_per_second
- Model #: LRES1055PF-2SFP+
- $159.00 –
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Vszerda 2.5 Gigabit Ethernet PCI Express PCI-E Network Interface Card 10/100/1000/25000 Mbps RJ45 LAN SI-PEX24059
- Model #: H4T89H89
- $35.69 –
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IBM Flex System FC3172 2-Port 8Gb FC Adapter
- Model #: 69Y1938
- $287.89
- $148.20 –
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- $120.40 –
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10Gb Network Card, Single SFP+ Port Ethernet Adapter, with Intel 82599EN, PCI-Express X8 NIC Support Windows Server/Linux/VMware, Compare to Intel X520-DA1
- Model #: BEQ05A6SV9L
- $189.99 –
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Vszerda PCI Express PCI-e x1 3 Port 1394B Controller Card Add On Card for FireWire 800 IEEE 1394 B 2 + 1 Digital Video Capture Camera
- Model #: RD4HSHI
- $49.69 –
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PCIe x4 Single-port 10G Copper Ethernet Network Adapter E610
- Brand: ClearLinks
- Standards: IEEE802.3
- Connectors: IEEE 802.3an 10GBASE-T IEEE 802.3-2012 1000BASE-T/100BASE-TX IEEE 802.1Q VLAN IEEE 1588 IEEE P802.1AE/D5.1 IEEE 802.3az IEEE 802.1BR/D3.3 IEEE 802.1Qbg
- Bluetooth: IEEE 802.3an 10GBASE-T IEEE 802.3-2012 1000BASE-T/100BASE-TX IEEE 802.1Q VLAN IEEE 1588 IEEE P802.1AE/D5.1 IEEE 802.3az IEEE 802.1BR/D3.3 IEEE 802.1Qbg
- Model #: LRES1060PT-RJ45
- $175.00 –
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1G Dual-Port to SFF-8087/M.2 Network Adapter (1ntel I350 Based)
- Brand: ClearLinks
- Part Number: LRES2030PT-2RJ45
- Standards: IEEE802.3
- Connectors: IEEE 802.3 IEEE802.3u IEEE802.3ab IEEE Std 1588 PTP IEEE 802.1Q VLAN IEEE 802.3az - Energy Efficient Ethernet (EEE)
- Model #: LRES2030PT-2RJ45
- $129.00 –
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X-MEDIA XM-NA3820 2-Port Dual 1000Mbps Gigabit PCI Express PCI-E Network Card
- Model #: XM-NA3820VTx
- $53.18 –
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X-MEDIA XM-NA3821 2-Port Dual 1000Mbps Gigabit PCI Express PCI-E Network Card
- Model #: XM-NA3821k0R
- $60.38 –
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X-MEDIA XM-NA3840 4-Port 1000Mbps Gigabit PCI Express PCI-E Network Adapter Card
- Model #: XM-NA3840CLR
- $85.98 –
Learn about Network Interface Cards (NICs)
Faster, More Reliable Wired Connectivity
A Network Interface Card gives your PC or server a fast, stable link to your network. From budget 1GbE to multi-gig (2.5GbE/5GbE) and 10GbE+, you’ll find PCI Express cards, USB adapters, and multi-port models in Newegg’s Network Interface Cards catalog. Pair your NIC with the right switch, optics, and cabling to unlock consistent throughput for gaming, low-latency streaming, content creation, virtualization, iSCSI backups, and more.
Popular NIC Categories
PCIe Ethernet Cards
The go-to choice for desktops and workstations. Options range from 1GbE and 2.5GbE to 10GbE/25GbE, with features like VLAN tagging, link aggregation (LACP), checksum/TSO/LRO offload, SR-IOV/RDMA, and PXE/Wake-on-LAN. Browse performance picks here: 10GbE network cards.
USB & USB-C Ethernet Adapters
Ideal for ultrabooks and mini PCs—plug-and-play wired networking without opening the case. Choose USB 3.0/USB-C for Gigabit and above. Find compact options in Network Adapters & Ethernet Connectors.
Fiber & SFP/SFP+ NICs
Use SFP/SFP+ for long-distance or electrically isolated runs and ultra-low latency. Pair your card with compatible optics from SFP/SFP+ transceivers and OM3/OM4 fiber for 10GbE and higher.
Key Decisions Before You Buy
Match the NIC to your target speed (1G, 2.5G, 5G, 10G, 25G), PCIe slot type (x1/x4/x8, Gen3/Gen4), and connector (RJ45 vs. SFP/SFP+). For fiber or long-run links, compare SFP+ fiber NICs. For copper installs, use the right cabling—see Ethernet cables (Cat6/Cat6a). If you’re wiring racks or tight spaces, confirm low-profile/half-height brackets and plan mounting with server racks & cabinets.
Performance tip: For 2.5GbE/5GbE over copper, Cat6/Cat6a reduces errors and heat. For 10GbE+ fiber, verify SR/LR optics and OM3/OM4 cable type. Power users should also check driver support for Windows, Linux, or VMware ESXi.
Typical Use Cases
Home & Gaming: Upgrade to a 2.5GbE PCIe card for faster downloads and smoother game/stream concurrency; pair with a 2.5G switch.
Creative & NAS: Move large media quickly with 10GbE PCIe NICs; use SFP+ for fiber runs to a rack or studio bay.
Virtualization & Labs: Choose dual-port/quad-port server NICs for VLANs, LACP, SR-IOV, and traffic isolation across hosts and services.
Why Add a Dedicated NIC?
Boosts wired speed and stability beyond onboard LAN, enables VLAN isolation and link aggregation, reduces CPU usage via hardware offloads, and adds flexibility for SFP/SFP+ fiber runs or multi-port redundancy and failover.
Frequently Asked Questions
Do I need 2.5GbE or is 1GbE enough?
1GbE is fine for basic browsing and streaming. If you copy large files, use fast NAS, or share bandwidth among many devices, 2.5GbE offers a noticeable speed boost—pair it with a compatible 2.5G switch.
RJ45 vs. SFP/SFP+ — which should I choose?
RJ45 over copper is convenient for short runs and existing cabling. SFP/SFP+ with fiber is better for long distances, lower latency, or electrical isolation. If you go fiber, match your card with the right optics from SFP/SFP+ transceivers.
Will a USB Ethernet adapter bottleneck my laptop?
Use USB 3.0 or USB-C models for Gigabit or faster speeds. They’re great for travel and thin-and-light PCs—browse options in Network Adapters & Ethernet Connectors.
Related Essentials
Build the whole stack: a multi-gig switch for uplinks, tidy runs with a patch panel, and protect your edge with firewalls & security.
Bestselling Network Interface Cards Reviews:
Brandon Y.
6/21/2023 11:48:57 AM
Works as advertised
“ Works without dropping connection (unlike like my onboard intel wired network adapter). ”
TP-Link TX201 Interface Cards 2.5Gbps PCI-Express 1 x RJ45