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QNAP QXG-5G2T-111C dual port 5GbE multi-Gig expansion card;Aquantia AQC111C;Gen2 x 2;low profile
- Model #: QXG-5G2T-111C
- $295.00 –
- More options from $194.68 - $295.00
- Free Shipping
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10GB PCIe Network Card (TX401)-PCIe to 10 Gigabit Ethernet Adapter,Supports Windows 11/10/8.1/8/7, Servers 2019/2016/2012 R2, and Linux, Including a CAT6A Cable
- Brand: TP-Link
- Part Number: TX401
- Standards: Ethernet
- Speed: 10 gigabits_per_second
- Model #: 408945287974
- $119.99 –
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- Package Contents: ThinkSystem QLogic QL41134 PCIe 10Gb 4-Port Base-T Ethernet Adapter Full-height (3U) bracket attached with low-profile bracket (2U) Documentation Flyer
- Parts: 1 Year
- Model #: 4XC7A08225
- $349.00 –
- Free Shipping
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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)
- Model #: CB007RL1CPC
- $316.00 –
- More options from $215.98 - $316.00
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QNAP Thunderbolt 3 to 10GbE Adapter
- Model #: QNA-T310G1T
- $241.23 –
- More options from $207.65 - $241.23
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MELLANOX ConnectX-5 EN Network Interface Card, 25GbE Dual-port SFP28, PCIe3.0 x16, Tall Bracket, ROHS R6
- Connectors: 25GBase-X
- BUS: PCI Express 3.0 x16
- Weight: 0.39
- Parts: 1 Year
- Model #: MCX512F-ACAT
- $344.00 –
- More options from $344.00 - $444.00
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U.S. Robotics USR5638 V.92 Faxmodem 56Kbps
- Type: Dial-Up Modem
- Interface: PCI Express
- Cable Interface: RJ11 port
- Standards: Data: V.92, V.90, V.34, V.32bis, V.32 Data Error Control/Compression: V.44/V.42/V42bis and MNP5 Fax: EIA 578 (Class 1) with V.17, V.29, V.27ter, V.21, Group 3 V.80 video conferencing support
- Model #: USR5638
- $62.99 –
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UGREEN USB Ethernet Adapter USB 3.0 to 10 100 1000 Gigabit Ethernet LAN Network Adapter Ethernet Compatible with Nintendo Switch MacBook Surface Pro Laptop PC Black
Limited time offer, ends 05/09
- Model #: 690888468
- $41.08 –
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- Part Number: 3N9XX+AA
- Connectors: Pass-through interface (connects internally to VRTX chassis I/O module)
- Features: Designed for Dell PowerEdge M520 (and other VRTX blades) Enables direct PCIe pass-through to VRTX I/O modules No switching or logic – direct external switch integration Low power, low latency
- Package Contents: 1x Dell 3N9XX Pass-Through Mezzanine Card
- Model #: 03N9XX
- $20.00 –
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USB3.0 Hub Gigabit Ethernet Network Adapter+3 Port Hub USB 3.0 To RJ45 10/100/1000M Lan Card For Macbook Windows 10
- Model #: RS-0084-black
- $17.79 –
- More options from $16.89 - $18.19
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Deal4GO NGFF M.2 (Key-A+E/Key-E) to Mini PCI-E Express Adapter Converter Full Size/Half Size mPCIe Slot for Intel AX201 AX200 9260 8265 8260 7260 WiFi Card
Limited time offer, ends 05/10
- Model #: ATTW-9/27-11410
- $30.38 –
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MELLANOX MCX4121A-XCAT CONNECTX-4 LX EN NTWK I/F CARD 10GBE 2PT
- Model #: MEL#MCX4121AXCAT
- $112.00 –
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Mellanox Technologies MCX414A-BCAT CONNECTX-4 EN NETWORK INTERFACE
- Model #: ME#MCX414ABCAT
- $223.55 –
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98IPR
- Standards: IEEE802.3, IEEE802.3u, IEEE802.3x
- Connectors: 1 x RJ45
- LEDs: Link, Activity
- Windows Vista: Windows 10/11
- Model #: UCCF-2500IR
- $19.46 –
- Free Shipping
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- $19.40 –
- Free Shipping
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Mellanox Connectx-4 Mcx4111a-Acat 25Gigabit Ethernet Card
- Weight: 0.35
- Model #: MCX4111A-ACAT
- $219.00 –
- More options from $122.00 - $223.00
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UOTEK Industrial PCIE to 8 Port RS485 RS422 High Speed Serial Card Converter ESD Anti-lightning UT-798
- BUS: X1 2.5Gbps PCl Express
- Temperature: -40~85°C
- Model #: UT798
- $132.70 –
- $11.01 Shipping
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3com 3C2000-T 10/100/1000Mbps PCI Network Adapter
- Standards: IEEE 802.3, IEEE 802.3U, IEEE 802.3z, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3x
- Connectors: 1 x RJ45
- BUS: 32-bit PCI 2.2
- LEDs: Four LED indicators(10,100,1000 activity)
- Model #: 3C2000-T
- $89.00 –
- More options from $89.00 - $94.48
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- $26.00 –
- More options from $26.00 - $27.26
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Broadcom LSI MegaRAID 9460-8I 8-port 12Gb/s SAS/SATA/NVMe Tri-Mode PCI-Express 3.1 RAID Controller, Single
- Model #: MLLSI94608IS
- $999.00 –
- More options from $425.00 - $999.00
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98IPR
- Part Number: 19825
- Connectors: 1 x RJ45
- Wireless Speed: Up to 2.5 Gbps
- LEDs: Link, Activity
- Model #: UCCF-2500RJ
- $13.90 –
- Free Shipping
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- $169.00 –
- More options from $169.00 - $591.76
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- Parts: 30 DAYS WARRANTY
- Labor: 30 DAYS WARRANTY
- Model #: 436431-001
- $44.99 –
- Free Shipping
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 RJ45Brandon 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