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RJ45 Network Cards

All Network Cards

72 RJ45 network cards from StarTech.com, Fentency, UGREEN and more. Most cost $12 to $81, and half cost less than $21.

Top brands: StarTech.com (4)

UGREEN

2.5 Speed, USB, RJ45, Realtek

+2.5 Gbps speed over RJ45 for faster wired networks
+Aluminum body for a sturdy build
+Realtek chip for the network connection
−Requires a USB-C port on the host device
$25.99-13%List: $29.99
as of 11/04/2026 11:07 PST - Details
StarTech.com

2.5 Speed, USB, RJ45, Realtek

+Supports 2.5 Gbps Ethernet speeds over a USB connection
+Uses a Realtek chip for network connectivity
+Multi-speed design works with NBASE-T networks
−Speed depends on the USB port and cable used
$44.99
as of 11/04/2026 21:11 PST - Details
StarTech.com

1 Ports, PCIe, RJ45, Realtek

+Realtek RTL8111H chipset
+Low profile bracket fits small form factor cases
+RJ45 copper connection
−Single port limits simultaneous connections
No current price. Check it at the store.
StarTech.com

2.5 Speed, USB, RJ45, Realtek

+2.5 Gbps Ethernet speed over USB-C
+Connects to Thunderbolt 3 ports
+Multi-speed support for 1 Gbps and lower
$48.99
as of 11/04/2026 21:10 PST - Details
Vicfluxion

2.5 Speed, USB, RJ45, Realtek

+Supports 2.5 Gbps wired connection speed
+Connects through a USB port to an RJ45 Ethernet cable
+Uses a Realtek chip
−Requires a free USB port on the computer
$15.99-20%List: $19.99
as of 11/04/2026 11:06 PST - Details
UGREEN

5 Speed, PCIe, RJ45, Realtek

+5 Gbps wired speed for fast local transfers
+PCIe x1 slot works with common motherboards
+RJ45 port connects to standard Ethernet cables
$32.99-18%List: $39.99
as of 11/04/2026 10:09 PST - Details
Acer

1 Speed, USB, RJ45, Realtek

+Gigabit 1Gbps Ethernet speed
+RJ45 port for standard Ethernet cables
+Plug and play setup
$11.99-14%List: $13.99
as of 11/04/2026 11:05 PST - Details
Rielincard

2.5 Speed, PCIe, RJ45, Realtek

+2.5Gbps wired Ethernet speed
+Realtek RTL8125B chip
+Low-profile bracket for small cases
$16.01-11%Was: $17.99
as of 11/04/2026 10:09 PST - Details
NicgigaSpec score 8.3

5 Speed, 5 Ports, PCIe, RJ45

+5 ports: the most ports of the 79 here
+5 speed: 262 of the 361 here have a lower speed
$33.29-10%Was: $36.99
as of 11/04/2026 21:09 PST - Details
AkpzkyywnSpec score 7.6

2.5 Speed, 2 Ports, PCIe, RJ45

+Two RJ45 ports for dual wired connections
+2.5Gbps speed per port
+Connects to a PCIe slot
−Takes up a PCIe slot
$116.07
as of 11/04/2026 10:07 PST - Details
VogzoneSpec score 7.4

2.5 Speed, 1 Ports, PCIe, RJ45

+Single RJ45 port for 2.5GbE copper networking
+Backward compatible with 1GbE and 100MbE networks
+Low-profile form factor fits compact chassis
−Only one network port per card
$15.99
as of 11/04/2026 10:06 PST - Details
Acer

2.5 Speed, USB, RJ45, Realtek

+2.5Gbps Ethernet speed, faster than standard gigabit
+RJ45 port for standard Ethernet cables
+Aluminum alloy housing
$24.99-11%List: $27.99
as of 11/04/2026 11:07 PST - Details
Acer

2.5 Speed, USB, RJ45, Realtek

+2.5Gbps Ethernet speed, faster than standard gigabit
+RJ45 port for standard Ethernet cables
+Aluminum alloy housing
$25.99-7%List: $27.99
as of 11/04/2026 10:06 PST - Details
ULANSeN

2.5 Speed, PCIe, RJ45, Realtek

+Supports 2.5 Gbps wired connection speed
+Also falls back to 1000 and 100 Mbps
+Installs in a PCI Express x1 slot
$18.99-5%Was: $19.99
as of 11/04/2026 10:08 PST - Details
Sunshot

1 Speed, USB, RJ45, Realtek

+Connects wired Ethernet through a USB-C port
+Gigabit 1Gbps speed over RJ45 connection
+Realtek chip for wired networking
$13.52-5%Was: $14.24
as of 11/04/2026 21:07 PST - Details
Uni

2.5 Speed, USB, RJ45, Realtek

+Faster 2.5 Gbps wired network speed
+Realtek network chip
+Sturdy aluminum body
$17.13-5%Was: $18.04
as of 11/04/2026 10:05 PST - Details
Uni

1 Speed, USB, RJ45, Realtek

+Connects through a USB 3.0 port
+Gigabit 1000Mbps wired network speed
+Realtek network chip
$15.19-5%List: $15.99
as of 11/04/2026 21:07 PST - Details
Binardat

2.5 Speed, PCIe, RJ45, Realtek

+2.5Gbps wired Ethernet speed
+Realtek RTL8125B chip
+Connects to a PCIe slot
−Takes up a PCIe slot
$16.99
as of 11/04/2026 21:09 PST - Details
BrosTrend

2.5 Speed, PCIe, RJ45, Realtek

+2.5 Gbps PCIe network card with RJ45 port
+Low-profile bracket included for compact cases
+Supports Windows 11, 10, 8.1, 8 and 7
−Requires a free PCIe slot inside the computer
$21.99
as of 11/04/2026 10:09 PST - Details
Bzizu

10 Speed, RJ45, Realtek

+10 Gbps RJ45 port for fast wired networking
+Realtek chip listed for the network controller
+Connects through a USB C port
−Speed depends on the USB port it is plugged into
$69.98
as of 11/04/2026 21:10 PST - Details
Cable Matters

2.5 Speed, USB, RJ45, Realtek

+USB connection works with computers lacking built-in Ethernet
+RJ45 port for standard Ethernet cables
+Realtek chip listed for driver compatibility
−Requires a 2.5 Gbps capable network to reach full speed
$24.99
as of 11/04/2026 21:10 PST - Details
CableCreation

1 Speed, USB, RJ45, Realtek

+10 foot cable gives extra placement flexibility
+USB connection works with computers lacking built-in Ethernet
+Realtek chip listed for driver compatibility
−Cable adds bulk compared with compact dongle adapters
$21.99
as of 11/04/2026 11:06 PST - Details
Cawwgt

RJ45, Realtek

+USB 2.0 connection works with older computers
+RJ45 port for standard Ethernet cables
+Realtek RTL8152B chip listed
−USB 2.0 interface limits throughput below gigabit speeds
$4.89
as of 11/04/2026 21:06 PST - Details
Cudy

2.5 Speed, USB, RJ45, Realtek

+2.5 Gbps speed for faster wired transfers
+Uses an RJ45 port for standard Ethernet cables
+Plug and play USB 3.0 connection
−Requires a free USB port on the computer
$17.99
as of 11/04/2026 21:10 PST - Details
Mcbazel

10 Speed, USB, RJ45, Realtek

+RJ45 port accepts standard Ethernet cables
+Realtek RTL8153E chip for wired networking
+Connects to USB-C ports
−Listed speed of 10 Gbps conflicts with its 1 Gbps name
$11.99
as of 11/04/2026 11:07 PST - Details
OLurkthu

2.5 Speed, M.2, RJ45, Realtek

+Supports 2.5G, 1G and 100M wired speeds
+RJ45 port for standard Ethernet cables
+Realtek RTL8125BG chip for wired connectivity
−Requires an M.2 A+E key slot on the motherboard
$14.08
as of 11/04/2026 21:10 PST - Details
OLurkthu

10 Speed, PCIe, RJ45, Realtek

+10 Gbps speed for fast wired networking
+Realtek chip listed for driver support
+PCIe x1 slot fits many desktop motherboards
−Requires a free PCIe x1 slot
$43.38
as of 11/04/2026 21:10 PST - Details

Compare specs

network cardSpeedInterfacePort typeSpec scorePrice
2.5USBRJ45n/a$25.99
as of 11/04/2026 11:07 PST - Details
2.5USBRJ45n/a$44.99
as of 11/04/2026 21:11 PST - Details
PCIeRJ45n/aNo current price
2.5USBRJ45n/a$48.99
as of 11/04/2026 21:10 PST - Details
2.5USBRJ45n/a$15.99
as of 11/04/2026 11:06 PST - Details
5PCIeRJ45n/a$32.99
as of 11/04/2026 10:09 PST - Details
1USBRJ45n/a$11.99
as of 11/04/2026 11:05 PST - Details
10RJ45n/a$79.99
as of 11/04/2026 21:06 PST - Details
2.5PCIeRJ45n/a$16.01
as of 11/04/2026 10:09 PST - Details
5PCIeRJ458.3$33.29
as of 11/04/2026 21:09 PST - Details

Before you buy

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