10 Gbps Network Cards

4 10 gbps network cards from 10Gtek, QNAP, Synology and more. Prices run $180 to $649.

OWC

10 Speed, Thunderbolt, RJ45

+10 Gb/s Ethernet speed over an RJ45 port

+Connects through a Thunderbolt 4 interface

+Thunderbolt 4 link rated at 40Gb/s

$199.99

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

Sonnet

10 Speed, Thunderbolt, SFP28

+Two 10GbE optical ports for fiber networking

+Connects through Thunderbolt

+Includes two short-range optical transceivers

−Limited to short-range optical connections

$649.99

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

Promise Technology

10 Speed, Thunderbolt, RJ45

+Thunderbolt connection for a high-speed link to a computer

+RJ45 port for standard Ethernet cabling

+10 Gbps speed for fast wired network transfers

−Requires a computer with a Thunderbolt port

No current price. Check it at the store.

StarTech.com

10 Speed, Thunderbolt, RJ45

+10 Gbps external Ethernet speed

+Connects over Thunderbolt 3, 4, and 5

+Multi-gigabit speed support

$179.99

as of 11/04/2026 03:08 PST - Details

Compare specs

Speed	Interface	Port type	Spec score	Price
10	Thunderbolt	RJ45	n/a	$199.99 as of 11/04/2026 06:06 PST - Details
10	Thunderbolt	SFP28	n/a	$649.99 as of 11/04/2026 06:05 PST - Details
10	Thunderbolt	RJ45	n/a	No current price
10	Thunderbolt	RJ45	n/a	$179.99 as of 11/04/2026 03:08 PST - Details

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