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- Standards: IEEE 802.3, IEEE 802.3z, IEEE 802.1Q, IEEE 802.3x, IEEE 802.3az
- Connectors: RJ-45 x 4
- LEDs: Four LED indicators(10,100,1000 activity)
- Wake On LAN: Yes
- Model #: TMGR6 (KH08P)
- $86.89 –
- More options from $86.89 - $92.23
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9300-8I LSI SAS3008 12Gbps SATA/SAS 8-Port HBA IT Mode ZFS FreeNAS unRAID
- Model #: 69089112134
- $88.90 –
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Solarflare Flareon SFN8522-PLUS Dual-Port 10GbE SFP+ Network Adapter
- Weight: 0.55
- Model #: SFN8522-PLUS
- $369.96 –
- More options from $369.96 - $713.20
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- Brand: Intel
- Model: X520-DA2
- Part Number: X520-DA2
- Speed: 10Gbps
- Model #: 09b-857986000382275
- $45.99 –
- More options from $45.99 - $59.99
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- Part Number: 4X90S91830
- Features: Product Type:Gigabit Ethernet Card
- Weight: 0.08
- Model #: 4X90S91830
- $30.99 –
- More options from $30.64 - $92.99
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LR-LINK 1023PF-4SFP28 PCIe x16 Quad-port 25G SFP28 Ethernet Network Adapter (Intel E810 Chip Based)
- Standards: IEEE 802.3az
- Connectors: 4*25G SFP28
- BUS: PCIe v4.0 x16
- Drivers: Included
- Model #: LRES1023PF-4SFP28
- $669.99 –
- $10.00 Shipping
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25GbE NIC Card for Mellanox MCX4111A-SFP28-X4, PCIe 3.0 x4 25Gb Ethernet NIC with Mellanox ConnectX-4 Lx Chipset, Single SFP28 Network Card Support RDMA
- Model #: 6909494036
- $59.99 –
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High Performance DW5930E 5G Network Module for Laptops, 5G Network Module, Plug and Play PCI Express M 2Network Solution
- Model #: TOLDB0CHJWD587
- $160.19 –
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StarTech.com 4-Port 2.5Gbps NBASE-T PCIe Network Card, Intel I225-V Chip, Quad Port Computer Network Card, Multi-Gigabit
- Color: Gray
- Dimensions: 5.920 x 8.520 x 1.480
- Weight: 0.4400
- Model #: PR42GI-NETWORK-CARD
- $218.81 –
- More options from $218.81 - $235.88
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Canon NA10 Gigabit Ethernet Card
- Brand: Canon
- Speed: 1000Mbps
- Connectors: To Scanner USB 2.0 Hi-Speed (Type A); To Network Ethernet 10/100/1000Base-T x1
- Interface: Ethernet
- Model #: 2998C002
- $155.75 –
- More options from $155.75 - $183.00
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10Gb PCI-E NIC Network Card, Dual Copper RJ45 Port, with Intel X550-AT2 Controller, PCI Express Ethernet LAN Adapter Support Windows Server/Linux/ESX, Compare to Intel X550-T2
Limited time offer, ends 10/15
- Brand: 10Gtek
- Part Number: X550-T2(Intel-1pc)-AU
- Standards: Ethernet
- Speed: 10 gigabytes_per_second
- Model #: 765417886041
- $134.99 –
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USB C to RJ45 LAN Ethernet Giga-bit Network Adapter with Chippset AX88179 with 100W PD Charging for Windows/iOS/iPadOS/macOS/Linux
- Model #: 69089223579
- $26.99 –
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- $444.99
- $128.99 –
- Save: 71%
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- Model #: XP0NY-I350-T2-dell-new
- $52.26 –
- More options from $52.26 - $84.00
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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
- $47.80 –
- More options from $47.80 - $53.11
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QNAP SP-E10G-SFP+-DAC Dual-Port 10GbE Card for TS-x79, SFP+ DAC, Emulex OCe11102-NX (SP-E10G-SFP+-DAC) (SP-E10G-SFP+-DAC)
- Model #: SP-E10G-SFP+-DAC-0
- $199.99 –
- More options from $168.00 - $199.99
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Mellanox ConnectX-3 10Gigabit Ethernet Card
- Model #: MCX354A-QCBT
- $82.00 –
- More options from $82.00 - $1,109.00
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Mellanox MHQH29-XTC 40 Gbps 2 x QSFP PCI Express 2.0 ConnectX IB Host Channel Adapter
- Parts: 1 year limited
- Labor: 1 year limited
- Model #: MHQH29-XTC
- $29.99 –
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- Part Number: EXPI9404PTL
- Model #: EXPI9404PTL-0
- $48.59 –
- More options from $48.59 - $64.50
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- Brand: NVIDIA
- Part Number: MCX653106A-HDAT
- Connectors: Dual QSFP56 InfiniBand and Ethernet (copper and optical)
- Temperature: Operational: 0 degree Celsius to 55 degrees Celsius Non-operational:-40 degrees Celsius to 70 degrees Celsius
- Model #: MCX653106A-HDAT
- $1,499.99 –
- More options from $1,499.99 - $1,818.99
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- $29.99 –
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Hynix HMA82GU6DJR8N-XN Memory 16GB DDR4 3200MHz UDIMM MEM-DR416L-HL01-UN32
- Model #: WDN-Hynix-HMA82GU6DJR8N-XN
- $135.45 –
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- $22.99 –
- $4.99 Shipping
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Intel E1G42ET 10/100/1000Mbps PCI-Express Dual Port Server Adapter
- Connectors: 2 x RJ45
- Dimensions: 2.68" x 6.59"
- Weight: 20
- Parts: Lifetime limited
- Model #: E1G42ET
- $89.00
- $48.88 –
- Save: 45%
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- Connectors: 2 x RJ45
- Parts: 30 days warranty
- Labor: 30 days warranty
- Model #: C63DV
- $29.00 –
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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
- $556.99 –
- More options from $556.99 - $670.97
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- Parts: 1 Year
- Model #: 4Z527AA
- $19.99 –
- More options from $19.99 - $61.44
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10G PCIe Network Card, PCI Express Gen 4 X1 to 10 Gigabit Ethernet Adapter, PCIe Ethernet LAN Adapter, 1RJ45 Port NIC Card for Linux
- Model #: TOLDB0FR9TTKB4
- $95.99 –
- More options from $95.99 - $99.99
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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:
John H.
10/19/2025 1:27:45 PM
Works great, once SFP-vendor-unlocked
“ Great price for a 10G-capable adapter ”
Intel X520-SR2 Dual Ports 10 Gigabit Ethernet Converged Network Adapter, PCI Express 2.0 x8, Low ProfileROBERT 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 | X550T2Brandon 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