Your Browsing History
Featured Brands
Quick View
Broadcom P210TP Dual-Port 10GBASE-T Ethernet PCI Express Network Interface Card; RoHS-compliant | BCM957416A4160C
- Brand: Broadcom
- Part Number: BCM957416A4160C
- Speed: 10/1GbE
- Connectors: RJ45
- Model #: BCM957416A4160C
- $317.99 –
- Free Shipping
Quick View
Dual-Port 2.5G PCIe Network Card +2pcs Cat8 Ethernet Cable
- Model #: 69089223598
- $45.99 –
- Free Shipping
Quick View
BlueField-2 DPU Dpu MBF2M345A-VENOT_ES BLueField 1PCS 2 200GB BF2M345A
- Model #: MBF2M345A-VENOT_ES
- $388.00 –
- Free Shipping
Quick View
Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-ACAT)
- Model #: 6909494013
- $79.00 –
- Free Shipping
Quick View
- Part Number: 3N9XX+AA
- Connectors: Pass-through interface (connects internally to VRTX chassis I/O module)
- Features: Designed for Dell PowerEdge M520 (and other VRTX blades) Enables direct PCIe pass-through to VRTX I/O modules No switching or logic – direct external switch integration Low power, low latency
- Package Contents: 1x Dell 3N9XX Pass-Through Mezzanine Card
- Model #: 03N9XX
- $20.00 –
- Free Shipping
Quick View
Vszerda Dual 2.5 Gigabit Ethernet PCI-E Network Expansion Card RJ45 LAN Adapter Low Profile Bracket SD-PEX24066
Limited time offer, ends 07/31
- Brand: IO Crest
- Part Number: SD-PEX24066
- Standards: IEEE 802.3
- Speed: 25000 megabits_per_second
- Model #: SD-PEX24066
- $48.99 –
- Free Shipping
Quick View
Mellanox ConnectX-5 Single/Dual-Port Adapter Supporting 100Gb/s Ethernet
- Model #: 6909494114
- $610.00 –
- Free Shipping
Quick View
EVGA NVIDIA GeForce GT 730 1GB DDR3 2DVI/Mini HDMI PCI-Express Video Card
- Model #: MLEV-730D31G
- $115.99 –
- Free Shipping
Quick View
- $24.00 –
- Free Shipping
Quick View
AddOn Intel E10G42BFSR Comparable 10Gbs Dual Open SFP+ Port PCIe x8 Network Interface Card with Transceivers
- Parts: 30 DAYS WARRANTY
- Labor: 30 DAYS WARRANTY
- Model #: E10G42BFSR-AO
- $29.99 –
- Free Shipping
Quick View
Mellanox Connectx-5 Single/Dual-Port Adapter Supporting 100Gb/S with Vpi Mcx556a-Ecat
- Model #: 6909494019
- $599.00 –
- Free Shipping
Quick View
PCIE Gigabit Network Card Adapter RTL8111 Ethernet Card RJ45 Wired Network Card Network Adapter Card
Limited time offer, ends 07/19
- Model #: FZW-LJX-136
- $58.90 –
- More options from $58.90 - $60.20
- Free Shipping
Quick View
Mellanox Network Adapter, SFP+ to QSFP (MAM1Q00A-QSA)
- Model #: 6909494018
- $81.35 –
- Free Shipping
Quick View
Mellanox ConnectX-3 VPI Network Adapter (MCX353A-QCBT)
- Model #: 6909494142
- $68.00 –
- Free Shipping
Quick View
Mellanox ConnectX-3 EN Network Adapter MCX312A-XCBT
- Model #: 6909494102
- $79.20 –
- Free Shipping
Quick View
Mellanox ConnectX-3 VPI Network Adapter MCX354A-FCBT
- Model #: 6909494064
- $99.00 –
- Free Shipping
Quick View
- Model #: AOC-SGP-i2-0
- $99.99 –
- Free Shipping
Quick View
2.5 Gigabit Ethernet PCI Express PCI-E Network Interface Card 10/100/1000/25000 Mbps RJ45 LAN Intel I225 Chipset, Black (SY-PEX24076)
Limited time offer, ends 07/12
- Model #: C2AG-1215-W19
- $33.34 –
- More options from $33.34 - $35.89
- Free Shipping
Quick View
- Brand: Dell
- Part Number: XK4C4
- Interface: PCI-Express
- Dimensions: 6.6" (L) x 2.7" (W) x 0.8" (H)
- Model #: 0XK4C4
- $26.00 –
- Free Shipping
Quick View
Mellanox Technologies Real MCX653106A-ECAT ConnectX-6 VPI PCIe 3.0 x16-100Gb Ethernet / 100Gb Infiniband QSFP28 x 2 Network Adapter
- Model #: 6909494118
- $998.00 –
- Free Shipping
Quick View
Vszerda PCIe to 8 Ports Gigabit Ethernet Network Adapter, Supports Windows 11/10/8.1/8/7, Win Server 2022/2019/2016, Linux
Limited time offer, ends 07/31
- Brand: IO Crest
- Speed: 1 gigabits_per_second
- Interface: ethernet
- BUS: ethernet
- Model #: T34521
- $269.99 –
- Free Shipping
Quick View
Quad 2.5 Gigabit Ethernet PCI Express PCI-E Network Interface Card 10/100/1000/25000 Mbps RJ45 LAN Realtek RTL8125 Chipset, Black (SI-PEX24077)
Limited time offer, ends 07/12
- Model #: C2AG-1224-C15
- $111.24 –
- More options from $111.24 - $117.89
- Free Shipping
Quick View
4 Ports 2.5G Gigabit Network Card High-speed Stable Network Card Gaming Ethernet 4-port Gigabit Network Adapter Desktop ESXi Diskless PXE Boot eokCXOY
Limited time offer, ends 07/12
- Model #: C2AG-1106-75
- $95.19 –
- More options from $95.19 - $101.00
- Free Shipping
Quick View
2.5 Gigabit Ethernet PCI Express PCI-E Network Interface Card 10/100/1000/25000 Mbps RJ45 LAN SI-PEX24059
Limited time offer, ends 07/12
- Model #: C2AG-1215-W20
- $26.69 –
- More options from $26.69 - $28.89
- Free Shipping
Quick View
Vszerda 2.5 Gigabit Ethernet PCI Express PCI-E Network Interface Card 10/100/1000/25000 Mbps RJ45 LAN Intel I225 Chipset, Black (SY-PEX24076)
Limited time offer, ends 07/31
- Brand: IO Crest
- Part Number: SY-PEX24076
- Speed: 2.5 gigabits_per_second
- Interface: pci_express_x1
- Model #: SY-PEX24076
- $35.99 –
- Free Shipping
Quick View
- Model #: 807N9, 0F4YMD, CN-0F4YMD
- $23.99 –
- Free Shipping
Quick View
Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-XCAT)
- Model #: 6909494035
- $168.00 –
- Free Shipping
Quick View
Vszerda 2.5 Gigabit Ethernet PCI Express PCI-E Network Interface Card 10/100/1000/25000 Mbps RJ45 LAN SI-PEX24059
Limited time offer, ends 07/31
- Brand: IO Crest
- Part Number: SI-PEX24059
- Standards: IEEE 802.3
- Speed: 2.5 gigabits_per_second
- Model #: SI-PEX24059
- $28.99 –
- Free Shipping
Quick View
PCI Add on Card 3-Port Combo 2x IEEE 1394B 9 Pin and 1x1394A 6 Pin PCI to 1394 800Mbps Extension Adapter Card
Limited time offer, ends 07/19
- Model #: ZZL-RNU-ASD1432441
- $53.39 –
- More options from $53.39 - $57.28
- Free 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 RJ45ROBERT S.
12/24/2024 9:32:56 AM
Everything up to 10GB
“ Have put into Windows 11, and multiple Linux computers and a router. All picked up and used the NIC's with no issues. ”
Intel Ethernet Converged Network Adapter X550, Backward compatible 10GBASE-T network adapter | X550T2Anonymous
5/15/2024 7:24:58 AM
Does it's job
“ Highly recommend this NIC card ”
Intel Ethernet Server Adapter I210, Single-port Gigabit Ethernet server adapter for entry-level servers and audio-video applications | I210T1Phillip S.
1/18/2024 9:14:52 AM
10Gbe NIC for my Truenas plex server
“ so I decided to go 10Gbe and of course needed NICs to match. ”
Intel Ethernet Converged Network Adapter X540-T1