Thunderbolt Network Cards

4 Thunderbolt network cards from ATTO and Sonnet. Prices run $180 to $199.

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

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.

Zunate

1 Ports, Thunderbolt, RJ45

+Connects through Thunderbolt 3 for high speed networking

+RJ45 port accepts standard Ethernet cables

+Adds a wired network port to Thunderbolt 3 devices

No price recorded yet.

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	RJ45	n/a	No current price
	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.