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Intel Dual SFP28 Ports 25/10/1GbE Ethernet Network Adapter E810-XXVDA2
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Intel E1G44ET2BLK 10/100/1000Mbps PCI-Express Gigabit ET2 Quad Port Server Adapter
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Intel
Intel E1G44ET2BLK 10/100/1000Mbps PCI-Express Gigabit ET2 Quad Port Server Adapter
  • Connectors: 4 x RJ45
  • Dimensions: 6.6" x 2.7"
  • Weight: 0.3
  • Parts: Lifetime limited
  • Model #: E1G44ET2BLK
Transition Networks Gigabit Ethernet Card
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Transition Networks Gigabit Ethernet Card
  • Package Contents: Gigabit Ethernet Card Low-Profile Bracket
  • Parts: Lifetime
  • Model #: N-GXE-SC-02
Intel EXPI9402PF 10/100/1000Mbps PCI-Express Two Gigabit Fiber Server Connections
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Intel
Intel EXPI9402PF 10/100/1000Mbps PCI-Express Two Gigabit Fiber Server Connections
  • Standards: IEEE 802.1Q VLANs IEEE 802.3ad IEEE 802.3 (z, ab, u, x) flow control support IEEE 802.1p IEEE 802.3z
  • Connectors: 2 x LC
  • BUS: PCI Express 1.0a
  • LEDs: 4 (1/port, link and speed) solid and blinking
  • Model #: EXPI9402PF
SAS Slim 4.0 SFF-8654 8i PCI-E Ultraport Slimline 74pin to Dual SFF-8643 4i Cable PCI-Express Mini SAS HD
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  • $41.89 
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Intel PWLA8492MF 10/100/1000Mbps PCI PRO/1000 MF Dual Port Server Adapter
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Intel
Intel PWLA8492MF 10/100/1000Mbps PCI PRO/1000 MF Dual Port Server Adapter
  • Standards: IEEE 802.3z
  • Connectors: 2 x LC
  • On-board Memory: 128 KB (64 KB per port)
  • Wake On LAN: Yes
  • Model #: PWLA8492MF
StarTech.com Gigabit Ethernet Card, PCI Express 2.0 x1 - Intel I350-AM2, 2 Ports
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StarTech.com Gigabit Ethernet Card, PCI Express 2.0 x1 - Intel I350-AM2, 2 Ports
  • Part Number: P021GINETWORKCARD
  • Dimensions: Height: 0.4" Width: 2.7" Depth: 5.8"
  • Package Contents: Gigabit Ethernet Card 1 x Quick-Start Guide 1 x Low-Profile Bracket
  • Model #: P021GINETWORKCARD
QNAP 2PORT QSFP28 100GBE NETWORK EXPANSION CARD LP PCIE GEN4X16
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  • $999.99 
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Aruba 9012 Gateway R1B31A
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  • $2,445.99 
  • Free Shipping
Micron MTA36ASF4G72PZ-3G2R1 Memory 32GB DDR4 3200MHz - MEM-DR432L-CL06-ER32
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Allied Telesis Fast Ethernet Fiber Network Interface Card with PCI-Express
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Allied Telesis Fast Ethernet Fiber Network Interface Card with PCI-Express
  • Weight: 0.21
  • Package Contents: Fast Ethernet Fiber Network Interface Card with PCI-Express Standard Bracket Low-Profile Bracket
  • Parts: Lifetime
  • Model #: AT-2711FX/LC-901
Intel EXPI9404PFBLK 10/100/1000Mbps PCI-Express PF Quad Port Server Adapter
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Intel
Intel EXPI9404PFBLK 10/100/1000Mbps PCI-Express PF Quad Port Server Adapter
  • Standards: IEEE 802.1Q VLANs IEEE 802.3ad IEEE 802.3ab IEEE 802.3u IEEE 802.3x IEEE 802.1p IEEE 802.3z
  • Connectors: 4 x LC
  • BUS: PCI Express 1.0a
  • LEDs: 4 (1/port, link and speed) solid and blinking
  • Model #: EXPI9404PFBLK
Aruba 9004 US 4-Port GbE RJ45 Gateway R1B20A
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  • $1,420.00 
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StarTech.com PEX40GQSFPI QSFP+ Server Network Card - PCIe 40Gbps - Converged Fiber NIC Adapter - Intel XL710 Chip (PEX40GQSFPI)
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StarTech.com PEX40GQSFPI QSFP+ Server Network Card - PCIe 40Gbps - Converged Fiber NIC Adapter - Intel XL710 Chip (PEX40GQSFPI)
  • Type: QSFP+ Server Network Card
  • External Ports: 1 - QSFP+ Female
  • Internal Ports: 1 - PCI Express x8 Male
  • Standard: IEEE 802.3ba 40GBASE-SR4 IEEE 802.3ba 40GBASE-LR4 PCI Express Rev 3.0, using PCIe x8 (or higher) slot
  • Model #: PEX40GQSFPI
Hynix HMA81GR7CJR8N-WM Memory 8GB DDR4 2933MHz RDIMM - MEM-DR480L-HL01-ER29
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  • $192.49 
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Sams M393A2K40DB2-CVF Memory 16GB DDR4 2933MHz RDIMM - MEM-DR416L-SL03-ER29
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  • $183.59 
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USB 1 Port RS232 1MBaud
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USB 1 Port RS232 1MBaud
  • Weight: 0.1500
  • Model #: US-101
USB-C to Ethernet Adapter 2.5G, USB Type C to RJ45 LAN Ethernet 2500/1000/100/10Mbps Gigabit Network Adapter for Windows 10,8.1, 8, 7,Vista,XP,Mac OS.
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USB-C to Ethernet Adapter 2.5G, USB Type C to RJ45 LAN Ethernet 2500/1000/100/10Mbps Gigabit Network Adapter for Windows 10,8.1, 8, 7,Vista,XP,Mac OS.

Limited time offer, ends 08/30

  • Standards: USB C
  • Connectors: USB C to RJ45
  • Package Contents: 1 x USB C to RJ45 Adapter
  • Class: 2.5G, Single RJ45
  • Model #: Q2197_GR
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  • $18.99 
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ADDON I210T1-AO ADDON INTEL I210T1 COMP NIC
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HPE SN1200E 16Gb 2p FC HBA
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HPE SN1200E 16Gb 2p FC HBA
  • Weight: 1.2000
  • Model #: Q0L14A
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  • $1,420.99 
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Intel Network Intel Wi-Fi 7 BE200 2230 2x2 BE+BT No vPro
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Hynix HMA82GU6DJR8N-XN Memory 16GB DDR4 3200MHz UDIMM MEM-DR416L-HL01-UN32
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  • $302.49 
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Transition Networks N-GXE-LC-01 1000Mbps PCI-Express Fiber Gigabit Ethernet Network Interface Card
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Transition Networks N-GXE-LC-01 1000Mbps PCI-Express Fiber Gigabit Ethernet Network Interface Card
  • Standards: IEEE 802.3z Gigabit Ethernet 1000Base-SX/LX IEEE 802.3x Full-Duplex Flow Control IEEE 802.1Q VLAN
  • Connectors: 1 x LC
  • BUS: PCI-e 1.1
  • LEDs: LINK/ACT (Link/Activity): ON = communication link; FLASHING = activity on link FDX (Full-duplex): ON = Full-duplex link
  • Model #: N-GXE-LC-01
2 Ports 1000M Gigabit Ethernet PCI Network LAN Card Adapter 1Gb Dual RJ45 PCI 10/100/1000Mbps with Intel 82546 Chipset
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2 Ports 1000M Gigabit Ethernet PCI Network LAN Card Adapter 1Gb Dual RJ45 PCI 10/100/1000Mbps with Intel 82546 Chipset

Limited time offer, ends 08/31

  • Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab
  • Connectors: 2 x RJ45
  • LEDs: Link, Activity
  • Temperature: 0°C ~ 55°C
  • Model #: PCI1000M-2P
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  • $29.99 
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  • $29.50 - $29.99
EnLabs PCIEGIGABIT Gigabit Ethernet PCI Express PCI-E Network Card 10/100/1000Mbps RJ45 LAN Adapter Converter for Desktop PC w/ Full-Profile PCI Slot Cover (Newest Realtek RTL8111F chipest)
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EnLabs PCIEGIGABIT Gigabit Ethernet PCI Express PCI-E Network Card 10/100/1000Mbps RJ45 LAN Adapter Converter for Desktop PC w/ Full-Profile PCI Slot Cover (Newest Realtek RTL8111F chipest)

Limited time offer, ends 08/31

  • Specifications: A single 10/100/1000Mbps compatible RJ45 Ethernet port Fully Compliant with IEEE 802.3, IEEE 802.3u, IEEE 802.3x and IEEE 802.3ab standards Supports IEEE 802.1Q VLAN tagging, IEEE 802.1P Layer 2 Priority Encoding and IEEE 802.3x Full Duplex Flow Control Jumbo frame support Full and half duplex support Supports Wake-on-LAN function Crossover Detection & Auto-Correction (Auto MDI/MDI-X)
  • Model #: PCIEGIGABIT
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  • $14.99 
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  • $13.20 - $14.99
TRANSITION NETWORKS N-GXE-LC-02 NETWORK INTERFACE CARD
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Nvidia Connect-6 VPI Adapter Card 200GB/S HDR - No Returns  MCX653436A-HDAB
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NVIDIA
Nvidia Connect-6 VPI Adapter Card 200GB/S HDR - No Returns MCX653436A-HDAB
  • Brand: Nvidia
  • Part Number: CX653436A-HDAB
  • Model #: MCX653436A-HDAB
  •  
  • $1,980.99 
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EnLabs PCIE1000MNW 10/100/1000Mbps RJ45 Gigabit Ethernet LAN PCI Express / PCIE Network Adapter / PCI-e Network Controller Card w/ Full-Profile PCI Slot Cover (Realtek RTL8111E chipest)
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EnLabs PCIE1000MNW 10/100/1000Mbps RJ45 Gigabit Ethernet LAN PCI Express / PCIE Network Adapter / PCI-e Network Controller Card w/ Full-Profile PCI Slot Cover (Realtek RTL8111E chipest)

Limited time offer, ends 08/31

  • Specifications: Data Rate(s) Supported: 10M,100M,1Gbps(1000 Mbps). Single-Lane (x1) PCI-Express with transfer rate 2.5Gb/s Full Duplex channel Compliant with PCI Express Revision 1.0a. PCI Express x1 interface, compatible with PCI Express x1, x4, x8, x16 slots. Supports Full Duplex flow control (IEEE 802.3x). Fully compliant with IEEE802.3, 802.3ab, 802.3u, 802.3x, 802.1q, VLAN. Supports IEEE 802.1P Layer 2 Priority Encoding Plug and Play Support. OS supported: designed for Windows 98SE, Windows ME, Windows 2000, XP, Vista, Windows 7 /8 / 10, Mac, Linux/Unix and others.
  • Model #: PCIE1000MNW
  •  
  • $12.69 
  • Free Shipping
StarTech PEX10GSFP4I StarTech.com SFP+ Server Network Card - 4 Port Nic Card - Intel XL710 Chip - PCIe Netword Card - 10 Gigabit Ethernet Card
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StarTech PEX10GSFP4I StarTech.com SFP+ Server Network Card - 4 Port Nic Card - Intel XL710 Chip - PCIe Netword Card - 10 Gigabit Ethernet Card
  • Standards: IEEE 802.3ae (10GBASE-LR/SR only) PCI Express Rev 3.0, using PCIe x8 (or higher) slot
  • Connectors: Connector Type (s): 1 x PCI Express x8 Male Internal Ports: 4 x SFP+ Slot Female
  • LEDs: 4 - Link / Activity (green)
  • Temperature: Operating Temperature: 5 ~ 50 degree Celsius (41 ~ 122 degree Fahrenheit) Storage Temperature: -20 ~ 60 degree Celsius (-4 ~ 140 degree Fahrenheit)
  • Model #: PEX10GSFP4I

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:

Anonymous
12/23/2024 9:55:48 AM
Great item and value. Works Great.

“ Needed to replace the onboard network adapter. This adapter was easy to install and setup. ”

2.5GBase-T PCIe Network Adapter, 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support Windows Server/Windows, Standard and Low-Profile Brackets Included PCIe to 2.5 Gigabit