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Intel Dual SFP28 Ports 25/10/1GbE Ethernet Network Adapter E810-XXVDA2
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Intel X710DA2BLK PCIe 3.0, x8 Dual port Ethernet Converged Network Adapter - OEM
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Intel
Intel X710DA2BLK PCIe 3.0, x8 Dual port Ethernet Converged Network Adapter - OEM
  • Package Contents: Ethernet Converged Network Adapter X540-T1 Information CD Low-Profile Bracket
  • Parts: Manufacturers Limited Warranty: Lifetime / Parts Only
  • Model #: X710DA2BLK
  • $385.99
  •  
  • $235.99 
  • Save: 38%
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Lenovo ThinkPad Ethernet Extension Adapter Gen 2
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Lenovo ThinkPad Ethernet Extension Adapter Gen 2
  • Part Number: 4X90Q84427
  • Features: Product Type:Ethernet Card
  • Weight: 0.05
  • Model #: 4X90Q84427
StarTech.com 4 Port Gigabit Power over Ethernet PCIe Network Card - PSE / PoE PCI Express NIC
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StarTech.com 4 Port Gigabit Power over Ethernet PCIe Network Card - PSE / PoE PCI Express NIC
  • Weight: 0.8
  • Package Contents: 4 Port Gigabit Power over Ethernet PCIe Network Card - PSE / PoE PCI Express NIC 1 x Driver CD 1 x Instruction Manual
  • Model #: ST4000PEXPSE
StarTech.com Dual Port 10G PCIe Network Adapter Card, Intel-X550AT 10GBASE-T PCI Express 10GbE Multi Gigabit Ethernet 5 Speed NIC 2 Port
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StarTech.com Dual Port 10G PCIe Network Adapter Card, Intel-X550AT 10GBASE-T PCI Express 10GbE Multi Gigabit Ethernet 5 Speed NIC 2 Port
  • Standards: IEEE 802.3an (10GBASE-T), IEEE 802.3ab (1GBASE-T), IEEE 802.3u (100BASE-T) PCI Express Rev 3.0
  • Temperature: Operating Temperature:5 ~ 50 degree Celsius (41 ~ 122 degree Fahrenheit) Storage Temperature: -20 ~ 60 degree Celsius (-4 ~ 140 degree Fahrenheit)
  • Humidity: 20% ~ 80% RH
  • Dimensions: 0.70" x 4.70" x 5.90"
  • Model #: ST10GPEXNDPI
DERAPID 2.5Gbps PCI Express Network Adapter RJ45 to PCIE Card RTL8125 NIC 2.5G Gigabit LAN Gaming Network Card PCI-E x1 RJ45 NIC for Desktop
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#1 Best Seller
in Network Interface Cards
DERAPID 2.5Gbps PCI Express Network Adapter RJ45 to PCIE Card RTL8125 NIC 2.5G Gigabit LAN Gaming Network Card PCI-E x1 RJ45 NIC for Desktop
  • Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab
  • Connectors: 1 x RJ45 Network
  • Class: 1000M, PCIE
  • Model #: 2.5G PCI-E to RJ45
  • $19.99
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  • $14.59 
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Intel Ethernet Converged Network Adapter X550, Backward compatible 10GBASE-T network adapter | X550T2
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Intel Ethernet Converged Network Adapter X550, Backward compatible 10GBASE-T network adapter | X550T2
  • Brand: Intel
  • Part Number: X550-T2
  • Speed: Dual-port 100Mb/s: 3.9 W (Typical Power) 4.9 W (Maximum Power) Dual-port 1GbE 5.5 W (Typical Power) 6.4 W (Maximum Power) Dual-port 10GbE 11.2 W (Typical Power) 13.0 W (Maximum Power)
  • Connectors: 2 x RJ45
  • Model #: X550T2
Intel Dual SFP28 Ports 25/10/1GbE Ethernet Network Adapter E810-XXVDA2
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10Gtek For Intel X520-DA1, Intel E10G42BTDA  Adapter Card with Intel 82599EN Controller 10Gb PCI-E Network Card, PCI Express2.0 x8, Single SFP+ Port, Support Windows Server/Linux/VMware
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10Gtek For Intel X520-DA1, Intel E10G42BTDA Adapter Card with Intel 82599EN Controller 10Gb PCI-E Network Card, PCI Express2.0 x8, Single SFP+ Port, Support Windows Server/Linux/VMware
  • Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab
  • Connectors: 1 x SFP+
  • Drivers: Included
  • Temperature: 0°C ~ 55°C
  • Model #: 603149403413
  •  
  • $39.99 
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RIITOP 2-Port 1000M PCIe Express Network Adapter Card NIC Intel 82575 Chipset Dual RJ45 PCI Express Gigabit Ethernet Lan Card Come with Low Profile Bracket
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RIITOP 2-Port 1000M PCIe Express Network Adapter Card NIC Intel 82575 Chipset Dual RJ45 PCI Express Gigabit Ethernet Lan Card Come with Low Profile Bracket

Limited time offer, ends 08/31

  • Connectors: 2 x RJ45
  • Dimensions: 12*11*2 cm / 4.7*4.3*0.8in.
  • Weight: 75g / 2.5oz.
  • Package Contents: 1x PCIE Dual Port Network Card Adapter(10/100/1000M). 1x Low Profile Bracket. 1x Drive CD.
  • Model #: PCIE1000M-2P
  •  
  • $28.99 
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  • $28.50 - $28.99
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
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  • $29.99
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  • $13.79 
  • Save: 54%
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Broadcom NetXtreme BCM5720-2P Dual-Port Ethernet Server Adapter PCI Exrpess 2.1 x 1
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Broadcom NetXtreme BCM5720-2P Dual-Port Ethernet Server Adapter PCI Exrpess 2.1 x 1
  • Standards: IEEE 802.3ab 1000BASE-T IEEE 802.3u 100BASE-TX IEEE 802.3i 10BASE-T IEEE 802.1q—VLAN tagging support IEEE 802.3x—Flow control IEEE 802.3az—EEE
  • Class: 1000M, Dual RJ45
  • Model #: BCM5720-2P
2.5GB PCIe Network Card, PCI-e Express to 2.5 Gigabit Ethernet Network Adapter for Desktop PC Gaming, Supports Windows 11/10/8.1/8/7, Linux
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  • $15.99 
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  • $15.50 - $15.99
Fenvi WiFi 7 BE200NGW WI-FI Card Tri-Band 802.11be Wireless M.2 Module,Tri-Band 2.4G/5G/6G,Up to 5800Mbps,Bluetooth 5.4, 4K QAM, 320MHz,MU-MINO, Internal Network Adapter for Laptop, Windows 10/11
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Fenvi WiFi 7 BE200NGW WI-FI Card Tri-Band 802.11be Wireless M.2 Module,Tri-Band 2.4G/5G/6G,Up to 5800Mbps,Bluetooth 5.4, 4K QAM, 320MHz,MU-MINO, Internal Network Adapter for Laptop, Windows 10/11
  • Standards: 802.11be/ax/ac
  • WiFi Generation: Wi-Fi 7
  • Frequency Band: 2.4 GHz / 5 GHz / 6 GHz
  • Wireless Speed: Up to 5.8 Gbps
  • Model #: WIFI 7 BE200NGW
  •  
  • $26.99 
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WAVLINK 5GB PCIe Network Card, RJ45 to PCIE Card 5G Base-T Network Adapter with RTL8126, 5000/2500/1000Mbps, 5G NIC for Windows 11/10/8/8.1/7 & Linux with Low Profile Bracket
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in 30 days
Wavlink
WAVLINK 5GB PCIe Network Card, RJ45 to PCIE Card 5G Base-T Network Adapter with RTL8126, 5000/2500/1000Mbps, 5G NIC for Windows 11/10/8/8.1/7 & Linux with Low Profile Bracket

Limited time offer, ends 09/01

  • Part Number: 1* RJ45 Ethernet port
  • Wireless Speed: Supports 10/100/1000Mbps/2.5Gbps/5Gbps speed
  • LEDs: 1 x Link(Green), 1 x Ethernet (Yellow)
  • Windows Vista: Compatible for X1,X4,X8,X16, both a standard and low-profile bracket are provided
  • Model #: WL-NWP003
  • $25.99
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  • $24.99 
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Intel X540T2 100Mbps/1Gbps/10Gbps PCI Express 2.1 x8 Ethernet Converged Network Adapter
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Intel X540T2 100Mbps/1Gbps/10Gbps PCI Express 2.1 x8 Ethernet Converged Network Adapter
  • Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab
  • Connectors: 2 x RJ45
  • Weight: 20
  • Parts: Lifetime
  • Model #: X540T2
Intel E10G42BTDA 10Gbps PCI Express 2.0 x8 Server Adapter X520-DA2
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in 30 days
Intel E10G42BTDA 10Gbps PCI Express 2.0 x8 Server Adapter X520-DA2
  • Standards: IEEE 802.1Q, IEEE 802.1p, IEEE 802.3ad (LACP), IEEE 802.1ae, IEEE 802.1as
  • Connectors: 2 x SFP+
  • Weight: 20
  • Parts: Lifetime limited
  • Model #: E10G42BTDA
Fenvi 10G Base-T PCI-e Network Card Marvell AQC113C, 10Gbps RJ45 Port NIC Card with Standard & Low-Profile Brackets, Support Windows10/11/Server
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fenvi
Fenvi 10G Base-T PCI-e Network Card Marvell AQC113C, 10Gbps RJ45 Port NIC Card with Standard & Low-Profile Brackets, Support Windows10/11/Server
  • Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab, IEEE802.3x
  • Connectors: 1 x RJ45
  • Windows Vista: Windows 10/11
  • Model #: F-10GRJ
  • $89.99
  •  
  • $51.59 
  • Save: 42%
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NVIDIA ConnectX-7 Adapter Card, Crypto enabled with Secure Boot, PCIe 4.0 x16 - 25Gb Ethernet / 50Gb Ethernet SFP56 x 4 | MCX713104AC-ADAT
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NVIDIA
NVIDIA ConnectX-7 Adapter Card, Crypto enabled with Secure Boot, PCIe 4.0 x16 - 25Gb Ethernet / 50Gb Ethernet SFP56 x 4 | MCX713104AC-ADAT
  • Brand: NVIDIA
  • Part Number: MCX713104AC-ADAT
  • Interface: PCI Express Gen 4.0: SERDES @ 16GT/s, x16 lanes (4.0 and 3.0 compatible) Networking Port: Quad-port SFP56 Ethernet (copper and optical)
  • Features: Protocol Support: Ethernet Protocols supported by the electrical interface 50GAUI-2 C2M, 50GAUI-1 C2M, 50GBASE-CR, 50GBASE-R2 , 40GBASE-CR4, 40GBASE-R2, 25GBASE-R, 10GBASE-R, 10GBASE-CX4, 1000BASE-CX, CAUI-4 C2M, 25GAUI C2M, XLAUI C2M , XLPPI, SFI Capabilities: Secure Boot Enabled, Crypto Enabled Electrical and Thermal Specifications Voltage: 12V, 3.3VAUX Maximum current: 100mA Typical power with passive cables in PCIe Gen 4.0 x16: 15.8W
  • Model #: MCX713104AC-ADAT
Intel® Ethernet Converged Network Adapter X550-T2
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Intel
Intel® Ethernet Converged Network Adapter X550-T2
  • Brand: Intel Corporation
  • Part Number: X550T2
  • Interface: PCIe v3.0 (8.0 GT/s)
  • Weight: 1
  • Model #: 735858307369
StarTech.com 1-Port Parallel PCIe Card, PCI Express to Parallel DB25 LPT Adapter Card, Desktop Expansion Controller for Printer, SPP/ECP
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StarTech.com 1-Port Parallel PCIe Card, PCI Express to Parallel DB25 LPT Adapter Card, Desktop Expansion Controller for Printer, SPP/ECP
  • Part Number: PEX1P2
  • Dimensions: Height: 0.7" Width: 2.9"
  • Weight: Weight (Approximate): 1.59 oz
  • Package Contents: 1-Port Parallel PCIe Card Full Profile Bracket Low Profile Bracket Quick Start Guidel
  • Model #: PEX1P2
Intel Ethernet Server Adapter I210, Single-port Gigabit Ethernet server adapter for entry-level servers and audio-video applications | I210T1
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Intel Ethernet Server Adapter I210, Single-port Gigabit Ethernet server adapter for entry-level servers and audio-video applications | I210T1
  • Brand: Intel
  • Part Number: I210T1
  • Standards: EEE 802.3 (10BASE-T, 100BASE-TX, 1000BASE-T)
  • Speed: 10/100/1000Mbps
  • Model #: I210T1
Intel Quad Ports SFP+ 10/1GbE Ethernet Network Adapter X710DA4FHBLK
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Intel
Intel Quad Ports SFP+ 10/1GbE Ethernet Network Adapter X710DA4FHBLK
  • Connectors: 4 x SFP+
  • Weight: 0.4
  • Model #: X710DA4FHBLK
DERAPID 2.5Gbps PCIe Network Card Dual RJ45 Port Adapter with Intel I226 Chipset for Desktop Gaming Office 2500/1000/100Mbps PCI Express Gigabit Ethernet NIC Card RJ45 LAN Port Controller
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DERAPID 2.5Gbps PCIe Network Card Dual RJ45 Port Adapter with Intel I226 Chipset for Desktop Gaming Office 2500/1000/100Mbps PCI Express Gigabit Ethernet NIC Card RJ45 LAN Port Controller

Limited time offer, ends 09/03

  • Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab
  • Connectors: 2 x RJ45
  • Wireless Speed: 2.5Gbps
  • Features: I226
  • Model #: 2.5G PCIE To RJ45 Adapter
  •  
  • $39.99 
  • Free Shipping
TRENDnet 10 Gigabit PCIe SFP+ Network Adapter, Convert A PCIe Slot Into A 10G SFP+ Slot, Supports 802.1Q, Standard & Low-Profile Brackets Included, Compatible With Windows & Linux, Black, TEG-10GECSFP
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TRENDnet 10 Gigabit PCIe SFP+ Network Adapter, Convert A PCIe Slot Into A 10G SFP+ Slot, Supports 802.1Q, Standard & Low-Profile Brackets Included, Compatible With Windows & Linux, Black, TEG-10GECSFP
  • Standards: IEEE 802.1Q IEEE 802.3ae IEEE 802.3x
  • Dimensions: 0.70" x 3.40" x 2.40"
  • Weight: 0.13 lb.
  • Package Contents: TEG-10GECSFP Quick Installation Guide CD-ROM (Driver) Standard & low-profile brackets
  • Model #: TEG-10GECSFP
fenvi 4 Port Gigabit NIC for Intel I226 Controller, 2.5GBase-T Network Adapter Card, Quad RJ45 Ports,PCI Express Gigabit Ethernet Card for Windows with Low Profile Bracket
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fenvi 4 Port Gigabit NIC for Intel I226 Controller, 2.5GBase-T Network Adapter Card, Quad RJ45 Ports,PCI Express Gigabit Ethernet Card for Windows with Low Profile Bracket
  • Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab, IEEE802.3x
  • Connectors: 4 x RJ45
  • Wireless Speed: 10/100/1000/2500Mbps
  • Windows Vista: Window 10/11
  • Model #: F4-2.5GRJ
  • $89.99
  •  
  • $56.99 
  • Save: 36%
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2Port 1000M PCI-E Gigabit Ethernet Network Adapter Card Intel82576 Chipset, Dual RJ45 1G 1000 Mbps PCIe Network Controller LAN Card, with Low Profile Bracket
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2Port 1000M PCI-E Gigabit Ethernet Network Adapter Card Intel82576 Chipset, Dual RJ45 1G 1000 Mbps PCIe Network Controller LAN Card, with Low Profile Bracket

Limited time offer, ends 08/31

  • Standards: IEEE802.3, IEEE802.3u, IEEE802.3x
  • Connectors: 2 x RJ45
  • Package Contents: 1x PCIE Dual Port Network Card Adapter(10/100/1000M). 1x Low Profile Bracket.
  • Class: 1000M, Dual RJ45
  • Model #: NIC-PCE1G-2P
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  • $29.99 
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  • $29.50 - $29.99
2.5GBase-T PCI Express Gigabit Network Card for Gaming, 2.5G/1G/100Mbps PCIe Ethernet Network Adapter RJ45 LAN Controller With Intel I226 for PC, Support Windows 10/11, Standard & Low-Profile Brackets
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2.5GBase-T PCI Express Gigabit Network Card for Gaming, 2.5G/1G/100Mbps PCIe Ethernet Network Adapter RJ45 LAN Controller With Intel I226 for PC, Support Windows 10/11, Standard & Low-Profile Brackets

Limited time offer, ends 09/04

  • Standards: IEEE802.3, IEEE802.3u, IEEE802.3x
  • Connectors: 1 x RJ45
  • LEDs: Link, Activity
  • Windows Vista: Windows 10/11
  • Model #: F-2500IR
  •  
  • $21.99 
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StarTech.com 1-Port 10Gbps PCIe Network Adapter Card, Network Card for PC/Server, PCIe Ethernet Card w/Jumbo Frame, NIC/LAN Interface Card
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StarTech.com 1-Port 10Gbps PCIe Network Adapter Card, Network Card for PC/Server, PCIe Ethernet Card w/Jumbo Frame, NIC/LAN Interface Card
  • Part Number: ST10GSPEXNB2
  • Standards: IEEE 802.3an (10GBASE-T) IEEE 802.3bz (5GBASE-T) IEEE 802.3bz (2.5GBASE-T) IEEE 802.3ab (1000BASE-T ) IEEE 802.3u (100BASE-TX ) IEEE 802.3i (10BASE-TX) IEEE 802.1Q (VLAN) IEEE P802.3az (EEE) IEEE 1588 (PTP) PCI Express Version 3.0
  • Connectors: 1 x RJ45
  • Dimensions: Height: 0.8" Width: 4.2"
  • Model #: ST10GSPEXNB2

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