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Mellanox ConnectX-4 EN Network Adapter (MCX414A-BCAT)
- Model #: 927946782558
- $279.99 –
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- $292.56 –
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- Model #: G174P-0G174P-dell-new
- $75.00 –
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Intel EXPI9402PTBLK-1PK 10/100/1000Mbps PCI-Express PRO/1000 PF Dual Port Server Adapter
- Connectors: 2 x RJ45
- BUS: PCI Express x16
- Dimensions: 0.85" Height x 5.10" Width
- Parts: Lifetime limited
- Model #: EXPI9402PTBLK-1PK
- $47.49 –
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StarTech.com 1-Port 2.5G NBASE-T PCIe Network Card Intel®I225-V, Single-Port Ethernet, Multi-Gigabit NIC
- Part Number: PR12GI-NETWORK-CARD
- Model #: PR12GI-NETWORK-CARD
- $45.99 –
- More options from $45.99 - $55.94
- $6.99 Shipping
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3.1 2.5GBase-T Network Adapter with Intel I225-V / I226-V 2500/1000/100Mbps PCI Express Gigabit Ethernet NIC Card RJ45 LAN Controller for Windows 10/11 with Low Profile Bracket
- Brand: HP
- Connectors: 1 x RJ45
- Features: 2500 megabits_per_second, Desktop, 1-YEAR Warranty
- Dimensions: 14.33in W x 12.83in H x 9.06in D
- Model #: 525242641350
- $41.99 –
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QNAP QXG-10G2T-X710, Two 10GbE Ports with SR-IOV and iSCSI, Block-based, Supports Multiple Virtual Disk Modes
- Brand: QNAP
- Part Number: QXG-10G2T-X710
- Standards: IEEE 802.1Q IEEE 802.3x IEEE 802.1p IEEE 802.3ad IEEE 802.3ae IEEE 1588 IEEE 802.1as
- Features: Controller: Intel Ethernet Controller X710 Number of Ports: 2 x NBASE-T (RJ45) Connector: NBASE-T (RJ45) PCIe and Lanes: PCIe 3.0 x4 Transmission Rates: 10Gbps/5Gbps/2.5Gbps/1Gbps/ 100Mbps Bracket: Low-profile bracket pre-installed; full-height and specialized (for selected QNAP NAS) brackets are bundled SR-IOV Support NVGRE, VXLAN, Geneve Support 1K ingress and egress QoS levels: On-chip QoS How mant virtual functions: 128 (64/port) Supported NAS operating systems QTS 4.4.3 or later (recommend an upgrade to the latest version); Windows 10 (1809 or later); Linux Stable Kernel 4.20/5.x; Windows Server 2019 (Driver required) Supported QNAP NAS: Models with PCIe slot(s) (1 free slo...
- Model #: RNAB095XMV6Z8
- $351.99 –
- More options from $351.99 - $456.00
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QNAP QXG-2G2T-I225 Dual Port 2.5GbE 4-Speed Network Card
- Model #: QXG2G2TI225
- $107.99 –
- More options from $107.99 - $232.00
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- Brand: NVIDIA
- Part Number: Legacy OPN: MCX715105AS-WEAT NVIDIA SKU: 900-9X7AH-0039-STZ
- Speed: Data Rate InfiniBand: NDR/NDR200/HDR/HDR100/EDR/FDR/ SDR Ethernet (Default Mode): 400/200/100/50/25/10 Gb/s
- Connectors: Networking Ports: Single QSFP112 InfiniBand and Ethernet
- Model #: MCX715105AS-WEAT
- $2,241.00
- $1,816.99 –
- Save: 18%
- More options from $1,780.53 - $3,719.82
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BUCIER PA17 PCIe 5.0 X16 Riser Adapter Card, Straight and Low-Profile for 1U/2U Server Installation
- Brand: BUCIER
- Part Number: PA17-180D
- Standards: PCIe
- Connectors: PCIe
- Model #: 8567457991
- $34.99 –
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LSI 9220-8i RAID Controller Card SAS 6Gbps HBA FW:P20 9211-8i IT Mode ZFS FreeNAS unRAID Expander Card + 2 * SFF8087 SATA Cable
- Model #: 69089112220
- $69.00 –
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- Brand: Intel
- Part Number: E610XT4
- Model #: E610XT4
- $546.52 –
- More options from $546.52 - $566.37
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2.5G PCIe Network Adapter RTL8125B 2500/1000/100Mbps, RIITOP PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support PXE for Windows/Linux/MAC with Low Profile
Limited time offer, ends 07/13
- Model #: PCET25G-UT-RT
- $19.99 –
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Refurbished V000270880 Toshiba Satellite C855D Mini Wireless Card
- Model #: V000270880
- $14.99 –
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StarTech 1-Port Gigabit PCIe Network Adapter Card, Low-Profile NIC ST1000SPEX2LT
- Brand: StarTech
- Model #:
- $35.07 –
- More options from $35.07 - $37.29
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QNAP QXG-2G1T-I225, 2.5 GbE network expansion card, 1 x NBASE-T (RJ45)
- Model #: QXG-2G1T-I225
- $79.00 –
- More options from $79.00 - $110.99
- $11.20 Shipping
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Solarflare Flareon SFN8522-PLUS Dual-Port 10GbE SFP+ Network Adapter
- Weight: 0.55
- Model #: SFN8522-PLUS
- $369.96 –
- More options from $369.96 - $699.00
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Intel EXPI9402PT 10/100/1000Mbps PCI-Express PRO/1000 PT Dual Port Server Adapter
- Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab, IEEE802.3x
- Connectors: 2 x RJ45
- BUS: PCI Express 1.0a
- LEDs: 4 (1/port, link and speed) solid and blinking
- Model #: EXPI9402PT
- $51.95
- $51.00 –
- More options from $51.00 - $57.15
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Intel E1G42ET 10/100/1000Mbps PCI-Express Dual Port Server Adapter
- Connectors: 2 x RJ45
- Dimensions: 2.68" x 6.59"
- Weight: 20
- Parts: Lifetime limited
- Model #: E1G42ET
- $89.00
- $48.98 –
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- Brand: Intel
- Part Number: X710T4LBLK
- Speed: Data rate per port: 10GbE/5GbE/2.5GbE/1GbE/100Mb
- Connectors: 4 x RJ45
- Model #: X710T4LBLK
- $594.99 –
- More options from $589.75 - $686.39
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10Gtek 10G Network Card Compare to Intel X520-DA2(Intel E10G42BTDA), Dual SFP+ Port, with Intel 82599EN Controller, PCIe x8 Ethernet Adapter Support Windows Server/Linux/VMware, with 2pcs SFP+ DAC 1 m
- Standards: IEEE802.3,IEEE802.3u,IEEE802.3ab
- Connectors: 2 x SFP+
- Temperature: 0°C ~ 55°C
- Features: Intel X520
- Model #: X520-10G-2S-X8+CAB-10GSFP-P1M (x2)-CSC-X
- $85.99 –
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12G External PCIe Controller Card, SAS/SATA HBA Card, Broadcom's SAS 3008 Chip, PCI Express 3.0 X8, 2X Mini SAS SFF-8644 Ports,Same as LSI SAS 9300-8E
- Model #: 69089112118
- $175.99 –
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USB 4.0 Type-C (Compatible to Thunderbolt 3) 10G Ethernet Adapter, For High-Speed Network Connections, RJ45 port supports 10Gb/s, 5Gb/s, 2.5Gb/s, 1Gb/s and 100Mb/s Base-T, Ideal for Mac Mini
- Class: 10G, PCIE
- Model #: SY-TDB24097
- $79.99 –
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SYBA Multimedia 2-Port Ethernet PCIe x1 Card
- Standards: IEEE 802.3, 802.3u, 802.3ab
- Dimensions: 1.50" x 5.50" x 7.00" (H x W x L)
- Weight: 0.28 lb
- Package Contents: 1 x Gigabit Ethernet PCIe Card 1 x User Manual 1 x Driver CD 1 x Low Profile Bracket
- Model #: SD-PEX24041
- $26.99 –
- More options from $26.99 - $33.70
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SAS9305-16i LSI 9305-16i SATA SAS 12Gbs RAID Controller Host Bus Adapter PCIe 3.0 x8 IT-Mode 05-25703-00 HBA (9305-16I)
- Model #: 69089112138
- $124.29 –
- More options from $95.19 - $272.00
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- Model #: X8DHT-N232-dell-new
- $55.89 –
- More options from $55.89 - $62.88
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- Brand: Intel
- Part Number: X710T2LOCPV3
- Speed: 10 Gbit/s Data Transfer Rate
- Model #: X710T2LOCPV3
- $287.99 –
- More options from $287.99 - $322.73
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MELLANOX MCX515A-CCAT CONNECTX-5 EN ADAP CARD 100GBE
- Model #: ME#MCX515ACCAT
- $337.69 –
- More options from $337.69 - $597.00
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- $99.99 –
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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 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)