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Mellanox ConnectX-4 MCX4121A-XCAT 10Gigabit Ethernet Card
- Model #: MCX4121A-XCAT
- $85.00 –
- More options from $84.99 - $584.00
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PCIe 1x SFP 10/100/1000Mbps Desktop Network Adapter Gigabit Fiber Network Lan Card with Intel I210 Chipset TXA026
- Model #: DW-TXA026
- $58.99 –
- More options from $58.99 - $68.78
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PCIe Gigabit Dual Port NIC Server Network Lan Adapter card with Intel 82575 10/100/1000Mbps for Desktop PC
- Model #: DIEWUseries-115
- $46.99 –
- More options from $46.99 - $56.70
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Intel Gigabit ET Dual Port Server Adapter, OEM Pack (E1G42ETBLK)
- Connectors: 2 x RJ45
- Weight: 0.25
- Package Contents: Gigabit ET Dual Port Server Adapter Informational CD Bracket
- Parts: 30 Days Warranty
- Model #: E1G42ETBLK
- $61.93 –
- More options from $45.00 - $63.89
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Myricom 10G-PCIE2-8B2-2S 2U 2-Port 10Gb/s PCI-E x8 SFP+ Ethernet Network AdapterMyricom 10G-PCIE2-8B2-2S 2U 2-Port 10Gb/s PCI-E
- Model #: ooc-0140044
- $112.28 –
- More options from $112.28 - $113.60
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IBM 49Y4230 10/100/1000Mbps PCI-Express I340-T2 Intel Gigabit Ethernet Dual Port Server Adapter
- Standards: IEEE 802.3, IEEE 802.1Q, IEEE 802.1p, IEEE 802.3ad (LACP)
- Connectors: 2 x RJ45
- Wake On LAN: Yes
- Dimensions: 5.51" x 2.76" x 0.63" (Low-profile)
- Model #: 49Y4230
- $35.00 –
- More options from $35.00 - $111.00
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LSI 9211-8I RAID Controller Card FW:P20 IT Mode ZFS FreeNAS unRAID SAS PCI E RAID Expander + 2* SFF8087 SATA Cable
- Model #: 69089112157
- $88.00 –
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Mellanox MCX631102AN-ADAT 25Gbps PCIe 4.0 x8 ConnectX-6 Lx EN Adapter Card
- Connectors: 2 x SFP28
- Model #: MCX631102AN-ADAT
- $362.00 –
- More options from $362.00 - $673.50
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Intel Ethernet Converged Network Adapter X710 10 GbE, Dual-port | X710DA2
- Connectors: 2 x RJ45
- Weight: 10
- Package Contents: Ethernet Converged Network Adapter X540-T1 Information CD Low-Profile Bracket
- Parts: Lifetime
- Model #: X710DA2
- $137.38 –
- More options from $137.33 - $490.68
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25G Ethernet Network Card, 2X SFP Ports, PCIe 4.0 X8, Intel E810 Controller, Support Windows 10/11/2016/2019/2022 /Centos7/ Ubuntu20/Vmware/Esxi7.0(not Support MAC)
- Model #: C2AG-0910-36
- $289.99 –
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SYBA SI-PEX24042 4 Port Gigabit Ethernet PCI-e x1 Network Interface Card
- Wake On LAN: Yes
- Weight: 0.3
- Package Contents: 1 x PCI-Express Four Gigabit Ethernet controller card 1 x User Manual 1 x Driver CD 1 x Low Profile Bracket
- Parts: 1 Year
- Model #: SI-PEX24042
- $40.72
- $37.99 –
- Save: 6%
- More options from $37.99 - $63.73
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- Features: Single and dual 1/10/25 GbE ports PCI Express (PCIe) v3.0, x8 IEEE 802.3by and 25GEthernet.org specification compliance
- Model #: XXV710DA2
- $199.99 –
- More options from $199.99 - $416.67
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- Connectors: 4 x RJ45
- Parts: Lifetime limited
- Labor: Lifetime limited
- Model #: EXPI9404PTG2L20
- $124.25 –
- More options from $124.25 - $139.00
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StarTech.com US1GC30W USB C to Gigabit Ethernet Adapter - White - USB 3.1 to RJ45 LAN Network Adapter - USB Type C to Ethernet (US1GC30W)
- Weight: 0.2
- Parts: 2 Year
- Model #: US1GC30W
- $37.99 –
- More options from $37.99 - $41.15
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- Model #: 71C1T
- $479.99 –
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- Brand: Nvidia
- Part Number: MCX75310AAS-HEAT
- Speed: DATA RATE InfiniBand (Default): NDR200/HDR/HDR100/EDR/FDR/ SDR Ethernet: 200/100/50/40/10/1 Gb/s Ethernet
- Connectors: Single OSFP InfiniBand and Ethernet
- Model #: MCX75310AAS-HEAT
- $1,204.10
- $1,197.90 –
- More options from $999.88 - $1,309.07
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- Brand: Intel
- Model: X520-DA2
- Part Number: X520-DA2
- Speed: 10Gbps
- Model #: E10G42BTDAG1P5
- $42.29 –
- More options from $42.29 - $108.25
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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
- $559.99 –
- More options from $559.99 - $670.97
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PCIe Gen3 x2 USB 3.2 / 3.1 Card ASM3142- PCI Express to 4-Port Type C HUB Internal Expansion Card Controller Adapter PCI Express Card Desktop PC Support Multiple INs
Limited time offer, ends 05/23
- Model #: 6900012173
- $58.27 –
- More options from $58.27 - $69.00
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Ethernet Network Adapter E810-CQDA2 for OCP 3.0 - PCI Express 4.0 x16 - 2 Port(s) - Optical Fiber - 100GBase-X - Plug-in Card
- Model #: E810CQDA2OCPV3G
- $399.00 –
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Intel EXPI9301CT 10/100/1000Mbps PCI-Express Desktop Adapter Gigabit CT
- Connectors: 1 x RJ45
- Temperature: 0°C ~ 55°C
- Humidity: 90% non-condensing relative humidity at 35° C
- Dimensions: 4.70" x 4.73" x 2.18"
- Model #: EXPI9301CT
- $53.27 –
- More options from $53.22 - $58.00
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StarTech.com Dual Port 40G QSFP+ Network Card - Intel XL710 Open QSFP+ Converged Adapter PCIe 40 Gigabit Fiber Ethernet Server 40GbE NIC
- Part Number: PEX40GQSFDPI
- Dimensions: Height: 0.8" Width: 4.8" Depth: 7.1"
- Weight: Weight (Approximate): 4.50 oz
- Model #: PEX40GQSFDPI
- $458.99 –
- More options from $458.99 - $661.63
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Intel Ethernet Converged Network Adapter X710-DA4, Quad-port 10GbE adapters | X710DA4FH
- Class: N/A
- Model #: X710DA4FH
- $444.99
- $239.92 –
- Save: 46%
- More options from $239.92 - $451.84
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- Connectors: 2 Slots
- Dimensions: 2.70" x 6.60"
- Model #: 581201-B21
- $36.21
- $34.09 –
- Save: 5%
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2.5GBase-T PCI Express Gigabit Network Card for Gaming, Streaming, 2.5G/1G/100Mbps PCIe Ethernet Network Adapter RJ45 LAN Controller for PC, Support Windows 10/11, Standard & Low-Profile Brackets
Limited time offer, ends 05/18
- Model #: C1JG-L-21051
- $24.99 –
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IOCREST IO-M2F113-GLAN, M.2 (B+M Key) to Single-Port 10G Gigabit Network Adapter, AQC113 Chip, 1×RJ45 Port with LED Indicator, Supports Windows and Linux Systems
Limited time offer, ends 05/29
- Model #: IO-M2F113-GLAN
- $155.99 –
- More options from $153.99 - $155.99
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StarTech.com 4-Port Gigabit Ethernet Network Card w/ Intel Chip, PCI Express, Intel I350 NIC - Quad Port PCIe
- Standards: IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX, IEEE 802.3ab 1000BASE-T IEEE 802.1Q VLAN Tagging IEEE 802.3x Full Duplex Flow Control
- Connectors: 4 x RJ45
- LEDs: 4 x 100/1000 Mbps Indicator 4 x Link / Activity
- Wake On LAN: Yes
- Model #: ST4000SPEXI
- $210.99 –
- More options from $25.09 - $257.00
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Vszerda Single Port SFP giga-bit Ethernet Network Card,with I210 Chip PCIe X1 Adapter LAN INC Card Controller Support Windows Server/Linux/VMware
Limited time offer, ends 05/22
- Model #: YG94HJ98
- $69.89 –
- Free Shipping
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StarTech.com 4-Port PCI Express Gigabit Network Adapter Card, Quad-Port PCIe Gigabit NIC
- Standards: Compliant with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
- Connectors: 1 - PCI Express x4 Male
- Temperature: Operating Temperature: 0 degree C to 55 degree C (32 degree F to 131 degree F) Storage Temperature: -40 degree C to 75 degree C (-40 degree F to 167 degree F)
- Humidity: 5 % ~ 95 % (Non-condensing)
- Model #: ST1000SPEX43
- $183.99
- $169.99 –
- Save: 7%
- More options from $169.61 - $178.54
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- Parts: 30 Days
- Labor: 30 Days
- Model #: 649281-B21-REF
- $29.00 –
- More options from $29.00 - $60.01
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Refurbished Qlogic QLE2660L 16GB Single Port PCIe 3.0 FC HBA
- Type: Control Module
- Model #: QLE2660L
- $125.25 –
- Free Shipping
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- Brand: NVIDIA
- Part Number: 900-9D3B6-00SV-AA0
- Connectors: 2-Ports QSFP112
- Features: Series / Cores: P-Series / 16 Arm-cores Data Transmission Rate: InfiniBand: NDR200 200Gb/s, Ethernet: 200GbE (Default) PCIe Support: PCIe Gen 5.0 x16 x16 PCIe Extension Option External Power Connector On-Board DDR5 Memory: 32GB Integrated BMC Crypto Disabled
- Model #: 900-9D3B6-00SV-AA0
- $3,414.17 –
- More options from $3,414.17 - $3,448.99
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- Parts: 1 Year
- Labor: 30 Days
- Model #: 665249-B21
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
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 RJ45Mc
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)