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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
- $227.54
- $217.29 –
- More options from $217.29 - $235.33
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Mellanox MCX414A-GCAT ConnectX-4 EN Network Interface Card 50GbE Dual-Port QSFP28 PCIe3.0 x8 ROHS R6
- Model #: MCX414A-GCAT
- $361.00 –
- More options from $361.00 - $561.00
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LSI Broadcom SAS 9300-8i 8-port 12Gb/s SATA+SAS PCI-Express 3.0 Low Profile Host Bus Adapter
- Model #: 69089112132
- $88.00 –
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Perle eR-S1110 Ethernet Repeater 06005324
- Brand: Perle Systems
- Model #: 06005324
- $282.00 –
- More options from $223.43 - $282.00
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StarTech.com USB 3.0 to Gigabit Ethernet NIC Network Adapter - 10/100/1000 Mbps
- Standards: IEEE802.3i, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3az
- Connectors: 1 x RJ-45 Female 1 x USB Type-A (9 pin) USB 3.0 Male
- LEDs: 1 x Activity (Yellow) 1 x Link (Green)
- Temperature: Operating Temperature: 0 ~ 50 degree Celsius (32 ~ 122 degree Fahrenheit) Storage Temperature: 0 ~ 70 degree Celsius (32 ~ 158 degree Fahrenheit)
- Model #: USB31000NDS
- $34.99 –
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StarTech.com USB 2.0 to 10/100 Mbps Ethernet Network Adapter Dongle
- Weight: 0.3
- Package Contents: USB 2.0 to 10/100 Mbps Ethernet Network Adapter Dongle 1 x Driver CD 1 x Instruction Manual
- Parts: 2 Year
- Labor: 2 Year
- Model #: USB2100
- $29.99 –
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StarTech US1GC30B USB-C to Gigabit Ethernet Adapter - Black - Thunderbolt 3 Port Compatible - USB Type C Network Adapter
- Standards: IEEE 802.3, 802.3u and 802.3ab
- Connectors: Connector Type (s): 1 - USB Type-C (24 pin) USB 3.0 Male External Ports: 1 - RJ-45 Female
- Temperature: Operating Temperature: 0 ~ 70 degree Celsius (32 ~ 158 degree Fahrenheit) Storage Temperature: -10 ~ 80 degree Celsius (14 ~ 176 degree Fahrenheit)
- Humidity: 5% ~ 90% RH
- Model #: US1GC30B
- $39.99
- $36.99 –
- Save: 7%
- More options from $36.99 - $44.02
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StarTech.com USB 3.0 to Gigabit Network Adapter - Silver - Sleek Aluminum Design Ideal for MacBook, Chromebook or Tablet
- Weight: 0.01
- Package Contents: USB 3.0 to Gigabit Network Adapter - Silver 1 x Quick Install Guide
- Parts: 2 Year
- Model #: USB31000SA
- $34.99 –
- More options from $34.99 - $40.88
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StarTech.com USB 3.0 to Gigabit Network Adapter with Built-In 2-Port USB Hub - Native Driver Support (Windows, Mac and Chrome OS)
- Standards: IEEE 802.3 10BASE-T, IEEE 802.3ab 1000BASE-T, IEEE 802.3u 100BASE-TX and IEEE 802.3X Full Duplex
- Connectors: 1 - USB 3.0 A (9 pin; SuperSpeed) Male 1 - RJ-45 Female 2 - USB 3.0 A (9 pin; SuperSpeed) Female
- Temperature: Operating Temperature:0 degree C to 70 degree C (32 degree F to 158 degree F) Storage Temperature: -10 degree C to 55 degree C (14 degree F to 131 degree F)
- Humidity: 40% ~ 50%
- Model #: USB31000S2H
- $52.99
- $47.99 –
- Save: 9%
- More options from $47.99 - $53.36
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- Brand: Intel
- Part Number: ?E810XXVDA4
- Standards: Ethernet
- Connectors: Ethernet
- Model #: E810XXVDA4
- $586.65
- $395.99 –
- Save: 32%
- More options from $395.99 - $1,367.32
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StarTech 1-Port Gigabit PCIe Network Adapter Card ST1000SPEX2T
- Brand: StarTech
- Model #:
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Solarflare SFN5122F Dual-Port 10 GbE SFP+ Enterprise Server Adapter
- Standards: IEEE 802.3ae IEEE 802.3ad IEEE 802.1Q IEEE 802.1p IEEE 802.3x
- Connectors: 2 x SFP+
- Dimensions: L: 16.74 cm (6.59 in) W: 6.89 cm (2.71 in)
- Weight: 0.45 lb.
- Model #: SFN5122F
- $69.99 –
- More options from $69.99 - $139.98
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- Connectors: 4 x RJ45
- Features: High Profile Bracket
- Weight: 1
- Model #: EXPI9404PTLBLK
- $49.99 –
- More options from $49.99 - $59.00
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10Gb Dual LAN Base-T PCI-e Network Card, Intel X540 Controller, RIITOP 10Gbps Ethernet Adapter, 2 * 10Gbe RJ45 Port , Support Windows/Windows Server/Linux/Vmware/ESX
Limited time offer, ends 05/18
- Model #: 10GNIC-X540T2
- $101.99 –
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QXG-25G2SF-CX6 Two Port 25GbE Network Card with SR-IOV and RoCE for Improved Network and VMware® Virtualization Environments (QXG-25G2SF-CX6)
Limited time offer, ends 05/15
- Model #: QXG-25G2SF-CX6-0
- $697.00 –
- More options from $667.99 - $749.00
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- Parts: 30 Days
- Labor: 30 Days
- Model #: X540-T2-REF
- $78.00 –
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- Model #: 669279-001 560SFP+
- $29.99 –
- More options from $29.99 - $58.00
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- Brand: Intel
- Part Number: E610XT4
- Model #: E610XT4
- $577.83 –
- More options from $479.99 - $577.83
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5.0GB PCIe Network Card PCIe to 5.0 Gigabit Ethernet Network Card, Supports Windows 11/10/8.1/8/7, Win Server 2022/2019/2016, Linux
Limited time offer, ends 05/15
- Model #: C2AG-1215-W32
- $32.09 –
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Gigabit 2 Port NIC with Intel I350 Chip, 1Gb Network Card Compare to Intel I350-T2 NIC, Dual RJ45 Ports, PCI Express 2.1 X4, Ethernet Card with Low Profile for Windows/Windows Server/Linux
Limited time offer, ends 05/15
- Model #: C2AG-1217-5
- $48.09 –
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10Gb PCI-E NIC Network Card, with Broadcom BCM57810S Chipset, Dual SFP+ Port, PCI Express Ethernet LAN Adapter Support Windows Server/Windows/Linux/VMware
Limited time offer, ends 05/27
- Model #: C12Y-ZY1107
- $75.00 –
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Dual PCIe 3.1 2.5GBase-T Network Adapter with in-tel I225-V / I226-V 2500/1000/100Mbps PCI Express Giga-bit Ethernet NIC Card RJ45 LAN Controller for Windows 10/11 with Low Profile Bracket
Limited time offer, ends 05/27
- Model #: C12Y-ZY951
- $41.99 –
- Free Shipping
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Intel E10G42BT 10Gbps PCI Express x8 X520-T2 10Gigabit Ethernet Card
- Connectors: 2 x RJ45
- Parts: Lifetime limited
- Labor: Lifetime limited
- Model #: E10G42BT
- $139.99 –
- More options from $139.99 - $411.71
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- $29.99 –
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- $199.99 –
- More options from $199.99 - $207.83
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Dual 2.5 Gigabit M.2 B+M Key Ethernet Network Expansion Card
- Model #: SI-MPE24078
- $59.99 –
- Free Shipping
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Mellanox Connectx-3 Pro - Network Adapter - PCI Express 3.0 X8-10 Gigabit Ethernet (MCX312B-XCCT)
- Model #: 86907754120
- $69.00 –
- More options from $67.87 - $168.89
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Dual-10Gb SFP+ PCI-E Network Card NIC, Mellanox ConnectX-3 PCI-e 3.0 X8 PCI Express 10 Gigabit Ethernet Server NIC (ST7286-10GB)
Limited time offer, ends 05/15
- Model #: 690789034
- $87.20 –
- More options from $87.20 - $89.00
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9207-8i 6Gbs SAS 2308 PCI-E 3.0 HBA IT Mode for ZFS FreeNAS unRAID 2*SFF-8087 SATA Host Bus Adapter
- Model #: 69089112112
- $64.00 –
- More options from $63.76 - $78.99
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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:
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