Sonnet Network Cards

3 Sonnet network cards. Prices run $600 to $999.

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

Sonnet

25 Speed, PCIe, SFP28

+Two 25GbE optical ports on one card

+Includes two 25GBASE-SR optical transceivers

+Low-profile form factor fits small cases

−Uses short-range optical transceivers only

$599.99

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

Sonnet

25 Speed, Thunderbolt, SFP28

+Connects over Thunderbolt for external use

+Two SFP28 ports for 25 Gbps speeds

+Fast 25 Gbps link speed

−Requires SFP28 optical transceivers for connection

$999.99

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

Sonnet Network Cards at a glance

3 of the 1,232 Network Cards we list are Sonnet (0%). Half of them cost less than $650; across all Network Cards, half cost less than $25.

Most listed here: 25 speed (2), Thunderbolt interface (2), RJ45 port type (4).

Counts and prices are this site's own listings; prices are the ones shown on the cards.

Speed	Interface	Port type	Spec score	Price
10	Thunderbolt	SFP28	n/a	$649.99 as of 11/04/2026 06:05 PST - Details
25	PCIe	SFP28	n/a	$599.99 as of 11/04/2026 03:08 PST - Details
25	Thunderbolt	SFP28	n/a	$999.99 as of 11/04/2026 06:05 PST - Details

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