General Knoppix support for those who've read the FAQ at the Wiki
Cisco w/ Green Hologram SFP-10/25G-LR-S 10/25GBASE-LR SFP28 Transceiver Module
$79.99
Cisco Meraki MA-SFP-10GB-SR 10G SFP+ SR 850nm 300m LC MMF
$29.99
Cisco SG110 24 Port Gigabit Ethernet Switch w/ 2 x SFP SG110-24
$117.00
Cisco Meraki MA-SFP-10GB-LR 10G SFP+ LR 1310nm 10km LC SMF
$39.99
NEW FS SFP-10G-T 10GBASE T SFP+ 30M Transceiver Module (Lot of 1)
$39.95
LOT OF 20 Genuine Cisco SFP-10G-SR V03 10GBASE-SR SFP+ Transceiver Module
$89.00
SFP-H10GB-CU3M Cisco 10GB SFP+ Twinax Copper 3M Passive Cable
$7.99
SFP-10G-SR Original Cisco 10GBASE-SR SFP+ V02 Multi mode Transceiver 10-2415-02
$5.00
New Cisco w/ Green Hologram SFP-25G-SR-S 25G SFP28 SR 850nm 300m LC MMF Module
$69.99
New Cisco w/ Green Hologram SFP-10G-LR-S 10G SFP+ LR 1310nm 10km SMF LC Module
$34.99