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10Gb PCI-E Network Card NIC, Dual RJ45 Copper Ports, Compare to Intel X540-T2, with Intel X540-BT2 Chip, PCIe X8, 10Gbase-T Ethernet LAN Adapter Support Windows Server/Windows/Linux/VMware ESX
Limited time offer, ends 09/26
- Model #: A9Y1-H0507-63
- $136.98 –
- Free Shipping
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ASUS USB-C2500 V2 2.5Gbps Type-C Wired Network Adapter, RJ45 LAN, USB-C High-Speed Transfer, Compatible with 2.5G/1G/100Mbps
- Brand: ASUS
- Speed: 2.5Gbps
- Connectors: 1 x RJ45
- Interface: USB 3.0 Type-C
- Model #: USB-C2500 V2
- $43.15 –
- More options from $30.99 - $65.61
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- Brand: Intel
- Part Number: ?E810XXVDA4
- Standards: Ethernet
- Connectors: Ethernet
- Model #: E810XXVDA4
- $578.00
- $391.79 –
- Save: 32%
- More options from $391.79 - $767.68
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Broadcom Dual-Port 100 Gb/s Ethernet PCI Express 4.0 x16 OCP 3.0 SFF Network Adapter | BCM957508-N2100G
- Brand: Broadcom
- Part Number: BCM957508-N2100G
- Speed: 100Gbps
- Connectors: QSFP56
- Model #: BCM957508-N2100G
- $1,003.99 –
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I225-V Network Card, Pci-E I225 2.5G Ethernet Server Network Card for Desktop Computers
- Model #: ooc-0142226
- $35.93 –
- Free Shipping
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StarTech USB31000SPTW USB 3.0 Gigabit Ethernet Adapter NIC w/ USB Port - White
- Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab
- Connectors: 1 x RJ45
- Dimensions: Height: 0.7" Width: 1.4" Depth: 3.2"
- Weight: Weight (Approximate): 1.80 oz
- Model #: USB31000SPTW
- $47.99
- $43.99 –
- Save: 8%
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GLOTRENDS LE8445 4-Port 2.5 Gigabit PCIe Ethernet Network Card, 4 x RTL8125BG Chip, 4 x RJ45 LAN Port, PCIe X4 Installation
- Model #: LE8445
- $61.99
- $54.99 –
- Save: 11%
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- Model #: YGW92, 0YGW92, CN-YGW92, RFPC9
- $17.39 –
- More options from $17.29 - $27.93
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- $29.99 –
- More options from $29.99 - $46.43
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LR-LINK OCP3.0 1GB network card NIC Compatible for Intel I350AM4,Four RJ45 Port Ethernet card,1G LAN Adapter Support Windows Server/Windows, Linux, Vmware Intel I350AM4(4*RJ45)
- Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab, IEEE802.3x
- Connectors: 4 x RJ45
- Temperature: 0°C ~ 55°C
- Humidity: 0 % ~ 90 % (Non-condensing)
- Model #: 6925909303684
- $139.99 –
- $10.00 Shipping
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2.5Gbps Network Adapter Card Realtek RTL8125B Ghip PCIE Gigabit Ethernett Adapter Card 4 RJ45 Connectors eokCXOY
- Model #: C2AG-1112-55
- $72.00 –
- More options from $72.00 - $110.99
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Mellanox CX4121A MCX4121A-ACAT 25GbE Dual-Port SFP28 PCIe 3.0 Adapter Card
- Model #: CX4121A MCX4121A-ACAT
- $98.65 –
- More options from $98.65 - $135.00
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LSI 9200-8i (9211-8I) RAID Controller Card 6Gbps SAS PCI E HBA IT Mode ZFS FreeNAS unRAID RAID Expander + 2 Cable SATA
- Model #: 69089112219
- $69.00 –
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- Connectors: 4 x RJ45
- Dimensions: 6.6" x 2.7"
- Weight: 0.3
- Parts: Lifetime limited
- Model #: E1G44ET2BLK
- $352.21
- $149.00 –
- Save: 57%
- More options from $148.95 - $403.20
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- Model #: ADIB00GVLNQDK
- $229.00 –
- More options from $229.00 - $241.00
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- $29.99 –
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HBA 9500-16i 12Gb/s Interface Cards/Adapter Internal SAS SATA NVME Tri-Mode Controller Host Bus Adapter
- Model #: 69089112251
- $596.00 –
- More options from $596.00 - $598.00
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- $29.76 –
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- Brand: Intel
- Model #:
- $22.55 –
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- Brand: NVIDIA
- Part Number: 900-9X81E-00EX-ST0
- Speed: InfiniBand: 800Gbs XDR IB (Default) Ethernet: 2x400GbE
- Interface: PCI-Express
- Model #: 900-9X81E-00EX-ST0
- $2,234.50 –
- More options from $2,040.99 - $3,235.00
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- $35.99 –
- Free Shipping
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Mellanox ConnectX-4 EN Network Adapter (MCX414A-BCAT)
- Model #: 927946782558
- $279.99 –
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- Model #: G174P-0G174P-dell-new
- $74.90 –
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- $292.56 –
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PCI Express Dual Port Copper Gigabit Ethernet Bypass Server Adapter(Intel I350AM2 based)
- Connectors: Dual Shielded RJ-45
- Temperature: 0°C ~ 45°C
- Humidity: 5 % ~ 95 % (Non-condensing)
- Class: 1000M, PCIE
- Model #: LREC9712HT-BP
- $188.30 –
- $10.00 Shipping
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10Gb PCI-E NIC Network Card for Intel X550-T2,2.5GbE/5GbE/10GbE Copper Dual RJ45 Ports,with Intel ELX550AT2 Chip,10GbE PCI Express 3.0 X4 Ethernet Adapter Support Windows/Linux/VMware
- Brand: HP
- Part Number: VG-X550-T2
- Features: 8.8"L x 5.9"W x 1.1"H, 10 gigabytes_per_second, ethernet, Desktop, 3-Year Free Warranty
- Dimensions: 14.33in W x 12.83in H x 9.06in D
- Model #: 532704595420
- $135.99 –
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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