Sonnet Network Cards

4 Sonnet network cards. Prices run $30 to $599.

Sonnet

1 Speed, PCIe, RJ45

+2.5Gb RJ45 Ethernet on a single port

+Uses existing Cat 5e cabling

+Low-profile form factor fits small cases

−Requires a PCIe slot in the computer

$29.99

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

Sonnet

10 Speed, PCIe, RJ45

+Two 10GbE RJ45 ports on one card

+Supports link aggregation

+Low-profile form factor fits small cases

−Requires a PCIe slot in the computer

$199.99

as of 11/04/2026 03:07 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

10 Speed, 1 Ports, PCIe, RJ45

+Single RJ45 port for 10 Gigabit Ethernet connections

+Installs in a PCIe slot for desktop connectivity

+Thunderbolt compatible for use with Thunderbolt systems

$109.99

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

Sonnet Network Cards at a glance

4 of the 1,232 Network Cards we list are Sonnet (0%). Half of them cost less than $155; across all Network Cards, half cost less than $25.

Most listed here: 10 speed (2), PCIe interface (4), RJ45 port type (3).

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

Speed	Interface	Port type	Spec score	Price
1	PCIe	RJ45	n/a	$29.99 as of 11/04/2026 03:08 PST - Details
10	PCIe	RJ45	n/a	$199.99 as of 11/04/2026 03:07 PST - Details
25	PCIe	SFP28	n/a	$599.99 as of 11/04/2026 03:08 PST - Details
10	PCIe	RJ45	n/a	$109.99 as of 11/04/2026 03:07 PST - Details

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