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QNAP QXG-10G2SF-X710 Dual-port 10 GbE Network Expansion Card
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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
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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
StarTech.com USB 3.0 to Fiber Optic Converter - USB to Open SFP Adapter - Gigabit Network Adapter Multi Mode (MMF)/Single Mode Fiber (SMF)
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StarTech.com USB 3.0 to Fiber Optic Converter - USB to Open SFP Adapter - Gigabit Network Adapter Multi Mode (MMF)/Single Mode Fiber (SMF)
  • Standards: IEEE 802.3z 1000BASE-SX/LX IEEE 802.1Q VLAN tagging
  • Connectors: Connector Type (s): 1 x 9 pin USB 3.0 A Female External Ports: 1 x SFP Slot Female
  • Wake On LAN: Yes
  • Temperature: Operating Temperature: 0 ~ 60 degree Celsius (32 ~ 140 degree Fahrenheit) Storage Temperature: -10 ~ 70 degree Celsius (14 ~ 158 degree Fahrenheit)
  • Model #: US1GA30SFP
  • $389.29 - $391.29
StarTech US1GC30B USB-C to Gigabit Ethernet Adapter - Black - Thunderbolt 3 Port Compatible - USB Type C Network Adapter
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StarTech US1GC30B USB-C to Gigabit Ethernet Adapter - Black - Thunderbolt 3 Port Compatible - USB Type C Network Adapter
  • Standards: IEEE 802.3, 802.3u and 802.3ab
  • Connectors: Connector Type (s): 1 - USB Type-C (24 pin) USB 3.0 Male External Ports: 1 - RJ-45 Female
  • Temperature: Operating Temperature: 0 ~ 70 degree Celsius (32 ~ 158 degree Fahrenheit) Storage Temperature: -10 ~ 80 degree Celsius (14 ~ 176 degree Fahrenheit)
  • Humidity: 5% ~ 90% RH
  • Model #: US1GC30B
  • $55.18 - $57.18
StarTech.com 2-Port 10Gbps USB-A & USB-C PCIe Card Adapter - USB 3.2 Gen 2 PCI Express Expansion Add-On Card - Windows, macOS, Linux
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StarTech.com 2-Port 10Gbps USB-A & USB-C PCIe Card Adapter - USB 3.2 Gen 2 PCI Express Expansion Add-On Card - Windows, macOS, Linux
  • Part Number: PEXUSB311AC3
  • Dimensions: Height: 0.7" Width: 3.2" Length: 4.7"
  • Weight: Weight (Approximate): 1.70 oz
  • Package Contents: USB Adapter 1 x Low Profile Bracket 1 x Quick Start Guide
  • Model #: PEXUSB311AC3
  • $81.96 - $83.96
StarTech.com 10G Network Card, 2x 10G Open SFP+ Multimode LC Fiber Connector, Intel 82599 Chip
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StarTech.com 10G Network Card, 2x 10G Open SFP+ Multimode LC Fiber Connector, Intel 82599 Chip
  • Weight: 0.39
  • Package Contents: 2-Port 10G Fiber Network Card with Open SFP+ - PCIe, Intel Chip 1 x Low-profile bracket 1 x Quick install guide
  • Parts: 2 Year
  • Model #: PEX20000SFPI
HPE SN1100Q 16Gb Dual Port Fibre Channel Host Bus Adapter
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StarTech.com Dual Port PCI Express (PCIe x4) Gigabit Ethernet Server Adapter Network Card - Intel i350 NIC
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StarTech.com Dual Port PCI Express (PCIe x4) Gigabit Ethernet Server Adapter Network Card - Intel i350 NIC
  • Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab
  • Connectors: 2 x RJ45
  • LEDs: 2 - 10/100/1000 Mbps Indicator 2 - Link / Activity
  • Dimensions: 4.8"H x 2.6"L x 0.7"W
  • Model #: ST2000SPEXI
  • $253.94 - $255.94
HPE SN1610E 32Gb 2-port Fibre Channel Host Bus Adapter R2J63A
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PCI 1000M Gigabit Network Adapter Card Intel 82540 LAN Card 1Gbps RJ45 Desktop PC Computer Ethernet Adatper For Windows XP/7/8/8.1/10
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  • $29.99 
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  • $24.50 - $29.99
Intel X520-DA2 Dual Ports 10 Gigabit Ethernet Converged Network Adapter, PCI Express 2.0 x8, Low Profile
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Intel X520-DA2 Dual Ports 10 Gigabit Ethernet Converged Network Adapter, PCI Express 2.0 x8, Low Profile
  • Brand: Intel
  • Model: E10G42BTDABLK
  • Part Number: X520-DA2
  • Standards: IEEE 802.3ae, IEEE 802.3ap, IEEE 802.3an, IEEE 802.3ad
  • Model #: E10G42BTDABLK
  •  
  • $459.99 
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StarTech.com ST10GPEXNDPI 10Gbps PCI-Express 2-port PCIe 10GBase-T / NBASE-T Ethernet Network Card - with Intel X550 Chip
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StarTech.com ST10GPEXNDPI 10Gbps PCI-Express 2-port PCIe 10GBase-T / NBASE-T Ethernet Network Card - with Intel X550 Chip
  • Standards: IEEE 802.3an (10GBASE-T), IEEE 802.3ab (1GBASE-T), IEEE 802.3u (100BASE-T) PCI Express Rev 3.0
  • Connectors: 2 - RJ-45 Female
  • LEDs: LED Indicators 2 - Link Speed 2 - Link/Activity
  • Temperature: Operating Temperature: 5 - 50 degree Celsius (41 - 122 degree Fahrenheit) Storage Temperature: -20 - 60 degree Celsius (-4 - 140 degree Fahrenheit)
  • Model #: ST10GPEXNDPI
10G Ethernet PCIe Network Adapter Lan Card, AQUANTIA AQC107 Chipset 10Gbps LAN Controller, RIITOP 10G/5G/2.5G/1G/100Mbps RJ45 NIC Card,Support PXE for Windows 11 and Linux
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  • $87.99 
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  • $85.50 - $87.99
HP Intel I350-T4 Gigabit Ethernet Card PCI Express 2.1 x4 - 4 Port
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Intel Ethernet Server Adapter I350-T4, quad-port gigabit Ethernet server adapters | I350T4V2
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Intel Ethernet Server Adapter I350-T4, quad-port gigabit Ethernet server adapters | I350T4V2
  • Brand: Intel
  • Part Number: I350T4V2
  • Standards: EEE 802.3 (10BASE-T, 100BASE-TX, 1000BASE-T)
  • Speed: 10/100/1000Mbps
  • Model #: I350T4V2
Intel Dual SFP28 Ports 25/10/1GbE Ethernet Network Adapter E810-XXVDA2
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Intel
Intel Dual SFP28 Ports 25/10/1GbE Ethernet Network Adapter E810-XXVDA2
  • Brand: Intel
  • Part Number: E810XXVDA2
  • Standards: Ethernet
  • Speed: 1000 megabits_per_second
  • Model #: E810XXVDA2
StarTech.com 2-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 2-Port 10Gbps PCIe Network Adapter Card, Network Card for PC/Server, PCIe Ethernet Card w/Jumbo Frame, NIC/LAN Interface Card
  • Part Number: ST10GSPEXNDP2
  • Standards: IEEE 802.3an (10GBASE-T) 802.3bz (5GBASE-T) 802.3bz (2.5GBASE-T) IEEE 802.3ab (1000BASE-T) IEEE 802.3u (100BASE-T) IEEE 802.3 (10BASE-T) IEEE P802.3az Energy Efficient Ethernet (EEE) IEEE 1588 (PTP) Wake-on-LAN (WOL) PCI Express Version 3.0
  • Connectors: 2 x RJ45
  • Wake On LAN: Yes
  • Model #: ST10GSPEXNDP2
Intel E10GSFPLR 10Gbps Dual Rate 10GBASE-LR SFP+ Module
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Intel
Intel E10GSFPLR 10Gbps Dual Rate 10GBASE-LR SFP+ Module
  • Connectors: 1 x 10GBase-LR
  • Weight: 0.1
  • Parts: Lifetime limited
  • Labor: Lifetime limited
  • Model #: E10GSFPLR
StarTech.com Dual Port PCI Express Gigabit Ethernet PCIe Network Card Adapter
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StarTech.com Dual Port PCI Express Gigabit Ethernet PCIe Network Card Adapter
  • Weight: 20
  • Package Contents: Dual Port PCI Express Gigabit Ethernet PCIe Network Card Adapter - PoE/PSE 1 x Low-Profile Bracket 1 x Driver CD 1 x Instruction Manual
  • Parts: 2 Year
  • Labor: 2 Year
  • Model #: ST2000PEXPSE
Lenovo ThinkServer X540-T2 AnyFabric 10 Gb 2-Port Base-T Ethernet Adapter by Intel
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  • $264.30 
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Intel EXPI9402PT 10/100/1000Mbps PCI-Express PRO/1000 PT Dual Port Server Adapter
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Intel EXPI9402PT 10/100/1000Mbps PCI-Express PRO/1000 PT Dual Port Server Adapter
  • Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab, IEEE802.3x
  • Connectors: 2 x RJ45
  • BUS: PCI Express 1.0a
  • LEDs: 4 (1/port, link and speed) solid and blinking
  • Model #: EXPI9402PT
Intel E10G42BT 10Gbps PCI Express x8 X520-T2 10Gigabit Ethernet Card
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Intel E10G42BT 10Gbps PCI Express x8 X520-T2 10Gigabit Ethernet Card
  • Connectors: 2 x RJ45
  • Parts: Lifetime limited
  • Labor: Lifetime limited
  • Model #: E10G42BT
  •  
  • $230.49 
  • Free Shipping
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
Intel Ethernet Converged Network Adapter X540-T2
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Intel Ethernet Converged Network Adapter X540-T2
  • Brand: Intel
  • Model: X540T2 (bulk/OEM package)
  • Part Number: X540-T2
  • Standards: 10GBASE-T, 1000BASE-T, 100BASE-TX, IEEE 802.3an, IEEE 802.3ab, IEEE 802.3u, IEEE 802.1Q VLAN, IEEE 802.3x Flow Control
  • Model #: X540T2BLK
StarTech.com 1-Port 2.5GbE M.2 2280 Network Card, NBASE-T PCIe Ethernet Card, Intel I225-V, Multi-Gigabit Desktop NIC/LAN Card, TAA
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StarTech.com 1-Port 2.5GbE M.2 2280 Network Card, NBASE-T PCIe Ethernet Card, Intel I225-V, Multi-Gigabit Desktop NIC/LAN Card, TAA
  • Part Number: MR12GI-NETWORK-CARD
  • Dimensions: Height: 0.6" Width: 3.1"
  • Weight: Weight (Approximate): 0.50 oz
  • Package Contents: 2.5Gigabit Ethernet Adapter 1 x CAT6 Cable Adapter 1 x Full-Profile Bracket 1 x Low-Profile Bracket 1 x M3x2 Screw 1 x QuickxStart Guide
  • Model #: MR12GI-NETWORK-CARD
IBM 39Y6126 10/100/1000Mbps PCI Express x4 Intel PRO/1000 PT Dual Port Server Adapter
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IBM 39Y6126 10/100/1000Mbps PCI Express x4 Intel PRO/1000 PT Dual Port Server Adapter
  • Connectors: 2 x RJ45
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: 39Y6126
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

Network Interface Cards

A network interface card (NIC) provides a physical connection to a network. It allows your computer to "talk" to the network and the network to communicate with your computer. Each computer that is attached to a network requires a network interface card or chip. They help computers communicate with servers and other computers on the network.

Usually, these fit into expansion slots of CPUs, unless they're pre-installed or integrated into the motherboard. Some are external and attach to computers through serial or parallel ports. NICs for laptops are usually external. An interface card takes data from a PC, converts it into data "frames" that are broadcast onto the network, and sends it to another interface card. That card receives the frames, converts them into data, and sends it to that PC.

What to Look for in Network Interface Cards

When you are looking to build a LAN or upgrade or replace it, the NIC should be one of the first things you consider. You need to think about compatibility with operating systems, ease of installation, and price, especially for large company installations where you'll need many cards. NIC cards are usually Ethernet adapters. Others support other protocols such as ATM.

One other consideration before purchasing network interface cards is the speed that they support. For example, you may want an interface card that supports 10 Mbps traditional, or fast Ethernet, and on up to 10/20Gbps! You should also know the type of ports you are connecting them to and the standards your systems support. PCI, PCI-x and PCI-e or USB are all common iterfaces, and whether or not they'll work on your system depends on what sort of Network Interface Card your system supports.

Bestselling Network Interface Cards Reviews:

Anonymous
11/17/2025 9:14:36 AM
Excellent performance

“ Select "Active Products" => "Network Connectivity" => "Intel Desktop Adapters" => "Intel Pro/1000 GT adapter". ”

Intel EXPI9301CTBLK Network Adapter 10/100/1000Mbps PCI-Express 1 x RJ45
ROBERT S.
12/24/2024 9:32:56 AM
Everything up to 10GB

“ Intel card works with every device NIC I have with no issues ”

Intel Ethernet Converged Network Adapter X550, Backward compatible 10GBASE-T network adapter | X550T2
Mc
10/6/2023 5:13:51 PM
Net Issue? TP-Link TG-3468 has you covered!

“ If I ever need another network adapter card this will be my top choice ”

TP-Link 10/100/1000Mbps Gigabit Ethernet PCI Express, PCIE Network Adapter / Network Card / Ethernet Card for PC, Win10 supported (TG-3468)
J.L
9/20/2023 9:30:58 PM
Rock solid connection .... the magic of Aquantia Chip !

“ You need a 10G Network card on copper, just buy this ! ”

TP-Link 10Gbps PCIe Network Card (TX401) - PCIe to 10 Gigabit Ethernet Network Adapter, Supports Windows 10/8.1/8/7, Windows Servers 2019/2016/2012 R2, and Linux, Including a CAT6A Ethernet Cable
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
Geoffrey G.
4/16/2023 12:39:02 PM
Faster than Realtek onboard

“ Even if you don't have big files to copy, the onboard Realtek mobo nic apparently uses a lot of cpu or something. ”

Intel EXPI9301CT Desktop Adapter Gigabit CT 10/100/1000Mbps PCI-Express 1 x RJ45
Jeffery R.
3/15/2023 9:42:12 PM
This is a good single port multi-gig nic

“ This nic performs as rated and is a great value for price. ”

2.5Gbase-T Pcie Network Card Intel Chip I226-V 2.5G PCI Express Gigabit Ethernet Card Wired RJ45 LAN Adapter Converter for WINDOW 10 /11
Trevin C.
11/13/2022 7:41:23 PM
Great little NIC for cheap

“ I didn't want to buy the 1225-V NIC's due to being plagued with problems so I opted for a i226 version. ”

2.5Gbase-T Pcie Network Card Intel Chip I226-V 2.5G PCI Express Gigabit Ethernet Card Wired RJ45 LAN Adapter Converter for WINDOW 10 /11