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- Model #: 656596-B21, 657128-001, 656594-001
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2.5G Gigabit network card PCIE to Gigabit wired network port 2.5G network game network card 2500M network adapter
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PCle to 2-port2.5G Gigabit Network Card ServerDesktop Soft Router2500M High-Speed RJ45 8125B
- Model #: C075.350
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WiFi 6E AX210 PCIe WiFi Network Card BT5.3 for Desktop PC, Tri-Band 6Ghz/5.8GHz/2.4GHz Wireless Adapter with AX210ngw chip, MU-MIMO, WPA3, OFDMA, Low-Profile Bracket, Support Windows 11/10(64Bit)
Limited time offer, ends 05/26
- Brand: Vszerda
- Standards: IEEE 802.11ac
- Speed: 2400 megabits_per_second
- Connectors: IEEE 802.11ac
- Model #: HS5554
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Mellanox ConnectX -3 EN
- Model #: MCX341A-XCEN
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PCl-E Gigabit Fiber Server Network Card l210As Single-Port SFP LC Compatible with Single/Multi-Mode
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IBM 44W4475 1000Mbps PCI-Express Ethernet Expansion Card (CIOv) for IBM BladeCenter
- Wake On LAN: Yes
- Temperature: Min Operating Temperature: 50 °F Max Operating Temperature: 89.6 °F
- Humidity: 8% - 80%
- Parts: 1 year limited
- Model #: 44W4475
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X-MEDIA XM-NA3840 4-Port 1000Mbps Gigabit PCI Express PCI-E Network Adapter Card
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- Package Contents: FlexFabric 20Gb 2-Port 630FLB Adapter Quick Install Card Product Warranty Statement
- Parts: 1 Year
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- Model #: 403BBLR
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Gigabit Ethernet PCI Express 2.1 PCI-E x1 Network Interface Card (NIC) 10/100/1000 Mbps Realtek RTL8111F Chipset SI-PEX24038
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LR-LINK100GbE Network Adapter with Mellanox ConnectX-5 Ex Chipset, PCIe 4.0(16GT/s) x16 Ethernet NIC, Dual QSFP28 Infiniband Network Card Compare to MCX556A-EDAT
- Model #: 6925909306395
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- Package Contents: FlexFabric 10Gb 2-port 536FLB Adapter Quick Install Card Product Warranty Statement
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Vszerda iHyper-Pro M.2 X16 to 4X PCIE 4.0 GEN4 Expansion Card Supports NVMe M.2 m Key 2280 up to 32Gbps for VROC NVMe Raid (iHyper)
Limited time offer, ends 05/26
- Brand: Vszerda
- Part Number: N38207-32702
- Interface: solid_state_drive
- BUS: solid_state_drive
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Vszerda iHyper-Pro M.2 X16 to 4X PCIE 4.0 GEN4 Expansion Card Supports NVMe M.2 m Key 2280 up to 32Gbps for VROC NVMe Raid (iHyper-Pro)
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- Brand: Vszerda
- Part Number: N38207-32702
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- Model #: 516937-B21-NOB
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- Electrical Outlet Plug Type: 10Gigabit Ethernet Card
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QLogic QLE8440-SR 10Gigabit Ethernet Card
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- Type: Other
- Model #: LPE12000-E
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Silicom PE2G4SFPI35L V:1.2 Quad Port 1Gb SFP PCIe Server Adapter
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X-MEDIA XM-NA3820 2-Port Dual 1000Mbps Gigabit PCI Express PCI-E Network Card
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QLogic QLE3442-SR 10Gigabit Ethernet Card
- Package Contents: QLE3442-SR 10Gigabit Ethernet Card Standard-size Bracket Low-Profile Bracket
- Parts: 3 Year
- Model #: QLE3442-SR-CK
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- Weight: 20
- Parts: 1 Year
- Labor: 1 Year
- Model #: 700752-B21
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Vszerda USB 3.1 Gen 2 10 Gbps 4 Port Type-A PCI-e 3.0 x4 ASMedia ASM3142 Controller,SI-PEX20233
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X-MEDIA XM-NA4811 PCI-E 2.5Gbps Gigabit PCI Express PCIe Network Adapter Card
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X-MEDIA XM-NA3821 2-Port Dual 1000Mbps Gigabit PCI Express PCI-E Network Card
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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:
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