Spec score 8.2
40 Speed, 2 Ports, PCIe, QSFP
+Two ports for dual network connections
+Supports 40 Gb/s speed on each port
+Low profile form factor fits small chassis
$499.00
as of 11/04/2026 06:05 PST - DetailsProduct details
Chelsio Communications T580-SO-CR 2-Port 10/40GbE Low Profile Offload Adapter with PCI-E X8 Gen 3, Qsfp Connector$499.00as of 11/04/2026 06:05 PST - Details
View on AmazonSpec score8.2
Pros
+Two ports for dual network connections
+Supports 40 Gb/s speed on each port
+Low profile form factor fits small chassis
+Uses PCI-E x8 Gen 3 interface
Compared with the 1 Network Cards on this page+2 ports: the most ports of the 5 here
+40 speed: only 1 of 9 here have a higher speed
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