Network Cards under $400

All Network Cards

5 network cards under $400. Most cost $325 to $399, and half cost less than $378.

Sonnet

10 Speed, RJ45

+10GbE RJ45 port for fast wired networking

+Two M.2 NVMe slots for storage expansion

+Dual USB-C ports included

−Uses a PCIe slot in the computer

$349.99

as of 11/04/2026 03:07 PST - Details

Odlnmoiox

10 Speed, PCIe, RJ45, Intel

+Two RJ45 ports for dual network connections

+Supports 10, 5, 2.5 and 1 Gb speeds

+PCIe 3.0 x4 interface fits smaller slots

−Speed of 10 Gbps is shown only as a maximum

$399.32

as of 11/04/2026 03:09 PST - Details

AkpzkyywnSpec score 7.6

2.5 Speed, 4 Ports, PCIe, RJ45

+Four RJ45 ports in a single card

+PCIe interface for modern desktops and servers

+Realtek RTL8125BG and Intel i226 chipset options

$325.14

as of 11/04/2026 10:07 PST - Details

GenericSpec score 7.4

10 Speed, 2 Ports, RJ45, Intel

+Two 10Gbit RJ45 ports

+Intel X710 controller

+RJ45 ports work with standard Ethernet cables

$399.00

as of 11/04/2026 06:05 PST - Details

QNAPSpec score 7.4

10 Speed, 2 Ports, USB, RJ45

+Two RJ45 ports for 10 Gbps wired connections

+Connects over USB 4 Type-C interface

+Compatible with Thunderbolt 3 and Thunderbolt 4 connections

$378.11

as of 11/04/2026 11:06 PST - Details

Compare specs

Speed	Ports	Spec score	Price
10		n/a	$349.99 as of 11/04/2026 03:07 PST - Details
10		n/a	$399.32 as of 11/04/2026 03:09 PST - Details
2.5	4	7.6	$325.14 as of 11/04/2026 10:07 PST - Details
10	2	7.4	$399.00 as of 11/04/2026 06:05 PST - Details
10	2	7.4	$378.11 as of 11/04/2026 11:06 PST - Details

Before you buy

Network Card Speeds: 1GbE vs 2.5GbE vs 10GbE

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.

Network Cards under $400

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