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BCM957508-P2100G High-Performance, Feature-Rich NetXtreme E-Series Dual-Port 100G PCIe Ethernet NIC 100Gbps PCIe 4.0 x16 2 x QSFP56
- Model #: BCM957508P2100G
- $546.20 –
- More options from $546.00 - $548.00
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Mellanox Connectx-3 Pro - Network Adapter - PCI Express 3.0 X8-10 Gigabit Ethernet (MCX312B-XCCT)
- Model #: C12Y-ZY1038
- $96.90 –
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StarTech 1-Port 10Gbps PCIe Network Adapter Card, Network Card for PC/Server, PCIe Ethernet Card w/Jumbo Frame, NIC/LAN Interface Card
- Part Number: ST10GSPEXNB2
- Standards: IEEE 802.3an (10GBASE-T) IEEE 802.3bz (5GBASE-T) IEEE 802.3bz (2.5GBASE-T) IEEE 802.3ab (1000BASE-T ) IEEE 802.3u (100BASE-TX ) IEEE 802.3i (10BASE-TX) IEEE 802.1Q (VLAN) IEEE P802.3az (EEE) IEEE 1588 (PTP) PCI Express Version 3.0
- Connectors: 1 x RJ45
- Dimensions: Height: 0.8" Width: 4.2"
- Model #: ST10GSPEXNB2
- $182.99
- $169.99 –
- Save: 7%
- More options from $169.99 - $215.95
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StarTech.com Dual Port Gigabit PCI Express Server Network Adapter Card - PCIe NIC
- Weight: 0.05
- Package Contents: Dual Port Gigabit PCI Express Server Network Adapter Card - PCIe NIC 1 x Low Profile Bracket 1 x Driver CD 1 x Instruction Manual
- Parts: 2 Year
- Model #: ST1000SPEXD4
- $103.99 –
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ATTO Technology ThunderLink NS 5102 Thunderbolt 5 to 100Gb Ethernet Adapter - Thunderbolt 5 - 100 Gbit/s Data Transfer Rate - Optical Fiber - QSFP28 - Desktop - TAA Compliant (TLNS-5102-D00)
- Brand: ATTO
- Part Number: TLNS-5102-D00
- Standards: TLNS-5102-D00
- Parts: 3 Year
- Model #: TLNS-5102-D00
- $2,569.10 –
- More options from $2,399.99 - $2,756.52
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- Disclaimer: 30 days warranty
- Registration Phone: 30 days warranty
- Model #: E1G44HTBLK-cr
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- Brand: Intel
- Model: X520-DA2
- Part Number: X520-DA2
- Standards: IEEE 802.3ae, IEEE 802.3ap, IEEE 802.3an, IEEE 802.3ad
- Model #: 11c-515452000192846
- $40.19 –
- More options from $40.19 - $65.99
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- Model #: THGMP
- $114.44
- $72.96 –
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- More options from $72.96 - $78.85
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10GB PCIe Network Card RJ45, RIITOP PCI-e to 10 Gigabit Ethernet Adapter, Supports Windows 11/10/8.1/8/7, Servers 2019/2016/2012 R2, and Linux
Limited time offer, ends 07/27
- Model #: PCE1X-10G-1P
- $71.95 –
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- Parts: 30 Days
- Labor: 30 Days
- Model #: 700699-B21-REF
- $18.99 –
- More options from $18.99 - $47.26
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AX211 WIFI 6E CNVio2 Adapter w/Tri Band 2.4 | 5 | & 6GHz AX211NGW 2.4Gbps 802.11ax Wireless CRF Card Bluetooth 5.3 Compatible No vPro
- Windows Vista: Windows 10, Windows 11, Linux
- Parts: 30 Days
- Labor: 30 Days
- Model #: 655360792715
- $18.96 –
- More options from $18.96 - $27.75
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SAS3008 9300-8I IT-Mode HBA JBOD PCI-E 3.0 SATA/SAS 8-Port SAS3 12Gb/s ZFS FreeNAS unRAID+2* SFF-8643 SATA Cable
- Model #: 69089112171
- $74.40 –
- More options from $74.40 - $76.00
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for Intel X550-T2 10Gb NIC Network Card Copper Dual RJ45 Port PCI Express 3.0 X4 Support Windows Server/Linux/ESX
- Type: PCI Express to Ethernet Port Card
- Model #: Y06SDF98WE5
- $529.00 –
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- Model #: 669279-001 560SFP+
- $29.99 –
- More options from $29.99 - $52.75
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RJ45 4-Port Gigabit Network Card Ethernet Server PCIE Network Card Adapter PCI-E X1 Interface
- Model #: ooc-0142404
- $57.54 –
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- $702.00 –
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- Brand: NVIDIA
- Part Number: 900-9D3B6-00CV-AA0
- Interface: PCI Express 5.0 x16
- Features: Data transmission rate: 2-Ports QSFP112 PCIe Support: PCIe Gen 5.0 x16
- Model #: 900-9D3B6-00CV-AA0
- $4,718.10 –
- More options from $3,834.99 - $5,213.38
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StarTech.com Mini PCI Express Gigabit Ethernet Network Adapter NIC Card
- Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab
- Connectors: 1 x RJ45
- LEDs: 1 - Activity 1 - Link
- Wake On LAN: Yes
- Model #: ST1000SMPEX
- $29.99 –
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StarTech PEX867WAC22 PCI Express AC1200 Dual Band Wireless-AC Network Adapter - PCIe 802.11ac WiFi Card
- Wireless Data Rates: 1.17 Gbps
- Standards: IEEE 802.11ac
- Color: Black
- Features: Add high speed 802.11ac WiFi connectivity to a desktop PC through a PCI Express slot with dual band 2.4 / 5GHz frequencies and up to 867Mbps PCI Express AC1200 Dual Band Wireless-AC Network Adapter PCIe 802.11ac WiFi Card Wireless-AC Card - 802.11a/b/g/n/ac 2 Transmitter / 2 Receiver (2x2:2) antenna configuration
- Model #: PEX867WAC22
- $93.99 –
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StarTech.com USB 3.0 to Gigabit Ethernet Adapter NIC w/ USB Port - Black
- Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab
- Connectors: 1 x RJ45
- Dimensions: 5" x 1.4" x 0.7"
- Weight: 1.5 oz [42 g]
- Model #: USB31000SPTB
- $49.99
- $45.99 –
- Save: 8%
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- Package Contents: Ethernet Converged Network Adapter X540-T1 Information CD Low-Profile Bracket
- Parts: Manufacturers Limited Warranty: Lifetime / Parts Only
- Model #: X710DA2BLK
- $148.00 –
- More options from $145.99 - $398.52
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StarTech.com PCI Express Gigabit Ethernet Fiber Network Card w/ Open SFP - PCIe SFP Network Card Adapter NIC
- Weight: 0.45
- Package Contents: 1 Port PCI Express Gigabit SFP Network Card 1 x Low Profile Bracket 1 x Driver CD 1 x Instruction Manual
- Parts: 2 Year
- Labor: 2 Year
- Model #: PEX1000SFP2
- $199.87 –
- More options from $199.87 - $214.99
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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.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-C to Ethernet Gigabit Adapter - Thunderbolt 3 Compatible - USB Type C Network Adapter - USB C Ethernet Adapter
- Connectors: 1 x RJ45
- LEDs: 1 x 1 - 10/100 Link/Activity (Green) 1 x Gigabit Link/Activity (Amber)
- Temperature: 0°C ~ 50°C
- Humidity: 5% ~ 80% RH
- Model #: US1GC301AU
- $50.99 –
- More options from $50.99 - $56.85
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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 –
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StarTech.com 2-Port 2.5G NBASE-T PCIe Network Card, Intel® I225-V, Dual-Port Ethernet, Multi-Gigabit NIC
- Part Number: PR22GINETWORKCARD
- Package Contents: 2-Port 2.5GBase-T Ethernet Network Adapter Card - PCIe 2.0 x2 1 x Low Profile Bracket 1 x Quick-Start Guide
- Model #: PR22GINETWORKCARD
- $162.96
- $158.76 –
- More options from $150.99 - $170.56
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StarTech ST3300U3S USB 3.0 to Gigabit Ethernet NIC Network Adapter with 3 Port Hub - White
- Standards: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3az USB 3.0 rev. 1.0
- Connectors: 1 x RJ45
- LEDs: 1 - Blue - Power 1 - Green - Network Link (solid) / Activity (flashing)
- Wake On LAN: Yes
- Model #: ST3300U3S
- $60.99 –
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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 $405.99 - $529.43
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StarTech.com PCI Express (PCIe) Gigabit Ethernet Multimode SC Fiber Network Card Adapter NIC - 550m
- Dimensions: Height: 4.6" Width: 0.7" Length: 4.7"
- Weight: Weight (Approximate): 2.30 oz
- Package Contents: 1 Port PCI Express Gigabit Fiber Network Card 1 x Low Profile Bracket 1 x Driver CD 1 x Instruction Manual
- Model #: PEX1000MMSC2
- $159.96 –
- More options from $148.78 - $243.25
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Broadcom P210P Dual-Port 10 Gb/s SFP+ Ethernet PCI Express Network Interface Card; RoHS-compliant, Halogen-Free | BCM957412A4120AC
- Brand: Broadcom
- Part Number: BCM957412A4120AC
- Speed: 10/1GbE
- Connectors: SFP+
- Model #: BCM957412A4120AC
- $247.99 –
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StarTech.com USB-C to Ethernet Adapter with 3-Port USB 3.0 Hub and Power Delivery - USB-C GbE Network Adapter + USB Hub w/ 3 USB-A Ports
- Standards: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab USB 3.0 - Backward compatible with USB 2.0 and 1.1 IEEE 802.3az Energy-Efficient Ethernet, IEEE 802.3x Flow Control, 802.1q VLAN Tagging, 802.1p Layer 2 Priority Encoding
- Connectors: 1 x RJ45
- Temperature: Operating Temperature: 0 ~ 45 degree Celsius (32 ~ 113 degree Fahrenheit) Storage Temperature: -10 ~ 70 degree Celsius (14 ~ 158 degree Fahrenheit)
- Humidity: 10~90% RH (Non-condensing)
- Model #: US1GC303APD
- $71.99
- $57.99 –
- Save: 19%
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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
“ Drivers can be found at: downloadcenter.intel.com Select "Active Products" => "Network Connectivity" => "Intel Desktop Adapters" => "Intel Pro/1000 GT adapter". ”
Intel EXPI9301CTBLK Network Adapter 10/100/1000Mbps PCI-Express 1 x RJ45Mc
10/6/2023 5:13:51 PM
Net Issue? TP-Link TG-3468 has you covered!
“ If I ever need another network adapter card this will be my top choice ”
TP-Link 10/100/1000Mbps Gigabit Ethernet PCI Express, PCIE Network Adapter / Network Card / Ethernet Card for PC, Win10 supported (TG-3468)