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StarTech.com Dual Port PCI Express (PCIe x4) Gigabit Ethernet Server Adapter Network Card - Intel i350 NIC
- Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab
- Connectors: 2 x RJ45
- LEDs: 2 - 10/100/1000 Mbps Indicator 2 - Link / Activity
- Dimensions: 4.8"H x 2.6"L x 0.7"W
- Model #: ST2000SPEXI
- $172.99 –
- Free Shipping
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StarTech.com PEX40GQSFPI QSFP+ Server Network Card - PCIe 40Gbps - Converged Fiber NIC Adapter - Intel XL710 Chip (PEX40GQSFPI)
- Type: QSFP+ Server Network Card
- External Ports: 1 - QSFP+ Female
- Internal Ports: 1 - PCI Express x8 Male
- Standard: IEEE 802.3ba 40GBASE-SR4 IEEE 802.3ba 40GBASE-LR4 PCI Express Rev 3.0, using PCIe x8 (or higher) slot
- Model #: PEX40GQSFPI
- $405.99 –
- More options from $42.91 - $529.43
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StarTech US1GC30A USB-C to Gigabit Ethernet Adapter - Aluminum - Thunderbolt 3 Port Compatible - USB Type C Network Adapter
- Standards: IEEE 802.3, 802.3u and 802.3ab
- Connectors: 1 x RJ45
- Parts: Manufacturers Limited Warranty: 2 Year / Parts Only
- Model #: US1GC30A
- $38.99 –
- More options from $38.99 - $48.74
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- Brand: Nvidia
- Part Number: MCX75310AAS-HEAT
- Speed: DATA RATE InfiniBand (Default): NDR200/HDR/HDR100/EDR/FDR/ SDR Ethernet: 200/100/50/40/10/1 Gb/s Ethernet
- Connectors: Single OSFP InfiniBand and Ethernet
- Model #: MCX75310AAS-HEAT
- $1,227.99
- $1,166.21 –
- Save: 5%
- More options from $1,166.21 - $1,330.19
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- $31.99 –
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StarTech.com Dual Port 10G PCIe Network Adapter Card, Intel-X550AT 10GBASE-T PCI Express 10GbE Multi Gigabit Ethernet 5 Speed NIC 2 Port
- Standards: IEEE 802.3an (10GBASE-T), IEEE 802.3ab (1GBASE-T), IEEE 802.3u (100BASE-T) PCI Express Rev 3.0
- Temperature: Operating Temperature:5 ~ 50 degree Celsius (41 ~ 122 degree Fahrenheit) Storage Temperature: -20 ~ 60 degree Celsius (-4 ~ 140 degree Fahrenheit)
- Humidity: 20% ~ 80% RH
- Dimensions: 0.70" x 4.70" x 5.90"
- Model #: ST10GPEXNDPI
- $474.61 –
- More options from $464.99 - $515.06
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Allied Telesis AT-2711FX/ST-901 100Mbps PCI-Express Network adapter
- Connectors: 1 x ST
- BUS: 32-bit PCI
- Weight: 20
- Parts: Lifetime limited
- Model #: AT-2711FX/ST-901
- $209.00
- $179.99 –
- Save: 13%
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Lenovo ThinkPad Ethernet Extension Adapter Gen 2
- Part Number: 4X90Q84427
- Features: Product Type:Ethernet Card
- Weight: 0.05
- Model #: 4X90Q84427
- $39.99 –
- More options from $18.39 - $84.99
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Broadcom Dual-Port 10 Gb/s Network Adapter | BCM957412N4120C
- Model #: BCM957412N4120C
- $375.99 –
- More options from $277.99 - $403.11
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- Part Number: 4X90S91830
- Features: Product Type:Gigabit Ethernet Card
- Weight: 0.08
- Model #: 4X90S91830
- $27.99 –
- More options from $15.99 - $92.99
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StarTech 4-Port Gigabit Ethernet Card P041GINETWORKCARD
- Model #: P041GINETWORKCARD
- $237.68 –
- More options from $234.99 - $270.00
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Broadcom BCM957504-N1100G 100Gbps Network Adapter
- Brand: Broadcom
- Speed: 100Gbps
- Connectors: 1 x QSFP56
- Features: Standards-compliant 100/50/25/10G single-port QSFP56 OCP 3.0 adapter with line-rate, full-duplex throughput NIC partitioning supporting 16 physical functions (PFs) TruFlow engine for intelligent flow processing to increase server VM density and accelerate vSwitch processing Industry's most secure OCP 3.0 adapter solution leveraging Broadcom's BroadSAFE technology to provide unparalleled platform security via Silicon Root of Trust New end-to-end congestion avoidance and management to anticipate and eliminate congestion before it happens Support for advanced networking technologies including RoCE, SDN, NFV and virtualization TruManage enhances server manageability and security for data center deployments Multi-host allows multiple compute and storage nodes to seamlessly connect t...
- Model #: BCM957504-N1100G
- $751.99 –
- More options from $399.00 - $751.99
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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
- $559.99 –
- More options from $559.99 - $670.97
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- Brand: Intel
- Part Number: X710T2LOCPV3
- Features: General RJ45 connections over CAT5e, CAT6, CAT6A cabling Energy Efficient Ethernet (EEE) Load balancing on multiple CPUs Protect, Detect and Recover Support for most network operating systems Time Sync (IEEE 1588*, 802.1as) OCP NIC 3.0 adapter Adapter features Data Rate Supported Per Port : 10/5/2.5/1Gbps and 100Mbps Bus Type/Bus Width: PCIe 3.0 x8 Interrupt Levels: INTA, MSI, MSI-X Hardware Certifications: FCC A, cULus, CE, VCCI, BSMI, RCM, KCC, EEE Controller: Intel® Ethernet Controller X710-AT2 (Dual Port)
- Model #: X710T2LOCPV3
- $286.06 –
- More options from $259.99 - $761.07
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StarTech.com 1-Port 2.5GbE M.2 2280 Network Card, NBASE-T PCIe Ethernet Card, Intel I225-V, Multi-Gigabit Desktop NIC/LAN Card, TAA
- Part Number: MR12GI-NETWORK-CARD
- Dimensions: Height: 0.6" Width: 3.1"
- Weight: Weight (Approximate): 0.50 oz
- Package Contents: 2.5Gigabit Ethernet Adapter 1 x CAT6 Cable Adapter 1 x Full-Profile Bracket 1 x Low-Profile Bracket 1 x M3x2 Screw 1 x QuickxStart Guide
- Model #: MR12GI-NETWORK-CARD
- $79.99 –
- More options from $78.85 - $82.15
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StarTech US1GC30DB USB C to Gigabit Ethernet Adapter - USB C Network Adapter
- Standards: IEEE 802.3, 802.3u and 802.3ab
- Connectors: 1 x RJ45
- BUS: USB 3.0
- LEDs: 1 x Power 1 x Activity
- Model #: US1GC30DB
- $30.99 –
- More options from $30.15 - $35.64
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- Brand: NVIDIA
- Part Number: MCX753436MS-HEAB
- Speed: Data Rate InfiniBand: NDR200/HDR/HDR100/EDR/FDR/ SDR Ethernet: 200/100/50/25/10 Gb/s
- Interface: PCI Express Gen 5.0/4.0: SERDES @ 16/32GT/s, x16 lanes (4.0 and 3.0 compatible) Networking Port: Dual-Port QSFP112 InfiniBand and Ethernet
- Model #: MCX753436MS-HEAB
- $1,699.99 –
- Free Shipping
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Allied Telesis AT-2911SX Gigabit Ethernet Card
- Weight: 0.25
- Model #: AT-2911SX/SC-901
- $291.89
- $65.23 –
- Save: 77%
- More options from $65.23 - $819.93
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- Part Number: MCX755106AC-HEAT
- Model #: MCX755106AC-HEAT
- $1,960.99 –
- More options from $1,960.90 - $2,985.99
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- $122.99 –
- Free Shipping
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2PORT GBE PCIE 4LANE CARD
- Brand: SIIG
- Part Number: LB-GE0014-S1
- Speed: 1000 megabits_per_second
- Interface: pci_x_4
- Model #: LB-GE0014-S1
- $155.50 –
- More options from $126.55 - $375.05
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Transition Networks M.2 Gigabit Ethernet Fiber Network Interface Card
- Part Number: NM2-GXE-2230-LC-01
- Model #: 648177041305
- $303.11 –
- More options from $302.62 - $345.10
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- Weight: 1.0000
- Model #: P51178-B21
- $112.91
- $89.99 –
- Save: 20%
- More options from $89.99 - $879.62
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StarTech.com USB 3.0 to Fiber Optic Converter - USB to Open SFP Adapter - Gigabit Network Adapter Multi Mode (MMF)/Single Mode Fiber (SMF)
- Standards: IEEE 802.3z 1000BASE-SX/LX IEEE 802.1Q VLAN tagging
- Connectors: Connector Type (s): 1 x 9 pin USB 3.0 A Female External Ports: 1 x SFP Slot Female
- Wake On LAN: Yes
- Temperature: Operating Temperature: 0 ~ 60 degree Celsius (32 ~ 140 degree Fahrenheit) Storage Temperature: -10 ~ 70 degree Celsius (14 ~ 158 degree Fahrenheit)
- Model #: US1GA30SFP
- $256.99
- $226.99 –
- Save: 11%
- More options from $226.99 - $282.82
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QXG-10G2T Dual 10GbE Port, Supports up to Five speeds (10G / 5G / 2.5G / 1G / 100M), and maximizes Your NAS Network connectivity.
- Type: Type
- Model #: QXG-10G2T
- $301.86 –
- More options from $297.82 - $622.81
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- Connectors: 2 x QSFP28
- Model #: E810CQDA2
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QNAP 2PORT QSFP28 100GBE NETWORK EXPANSION CARD LP PCIE GEN4X16
- Model #: QXG100G2SFE810
- $999.99 –
- More options from $999.00 - $1,399.00
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Sonnet Solo 10G Thunderbolt 3 to 10 Gigabit Ethernet Adapter with NBASE-T Support
- Connectors: 1 x RJ45
- Wake On LAN: Yes
- Model #: SOLO10G-TB3
- $212.64 –
- More options from $207.62 - $286.99
- Free Shipping
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Qnap 5 Gbe Network Expansion Card
- Weight: 1
- Model #: QXG5G1T111C
- $115.99 –
- More options from $113.10 - $199.00
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TAA GIG PCIE FIBER ADAPTER
- Brand: ALLIED TELESIS BOX
- Part Number: AT-2914SX/LC-901
- Interface: PCI
- BUS: pci
- Model #: AT-2914SX/LC-901
- $298.41 –
- More options from $298.11 - $773.47
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- Brand: NVIDIA
- Part Number: MCX623106AS-CDAT
- Speed: DATA RATE: Ethernet 1/10/25/40/50/100 Gb/s
- Connectors: Dual QSFP56 Ethernet (copper and optical)
- Model #: MCX623106AS-CDAT
- $1,297.51 –
- More options from $1,296.99 - $1,628.00
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SINGLE PORT 2.5GBE 4SPEED NTWK
- Model #: QXG-2G1T-I225
- $91.00 –
- More options from $89.08 - $224.72
- Free Shipping
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Aruba 9004 US 4-Port GbE RJ45 Gateway R1B20A
- Weight: 3.5500
- Model #: R1B20A
- $1,420.00 –
- Free Shipping
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SIIG LB-WR0011-S1 PCI-Express Wireless 2T2R Dual Band WiFi Ethernet PCIe Card - AC1200
- Temperature: Operating temperature: 32 to 140 degrees F Storage temperature: -14 to 158 degrees F
- Humidity: 5% to 90% RH (non-condensing)
- Dimensions: 2.60" x 4.72" x 0.71"
- Weight: 0.10 lb.
- Model #: LB-WR0011-S1
- $41.99 –
- More options from $41.99 - $61.24
- $11.20 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