General Knoppix support for those who've read the FAQ at the Wiki
SFP-10G-SR CISCO 10G SR SFP+ C-CLASS TRANSCEIVER 10 PACK
$99.00
ProLabs 10GBase-TX SFP+ RJ-45 Copper Transceiver Module P/N: SFP-10GBASE-T-C NEW
$34.99
New HP Aruba J9150D 10GBASE-SR SFP+ Transceiver Module
$35.88
10 PCS Cisco GLC-LH-SMD 10-2625-01 1310nm SFP Transceiver Module
$85.00
Genuine Cisco ‎SFP-10G-SR Transceiver Module (10-2415-03)
$5.85
CISCO SFP-10G-LR SFP TRANSCEIVER MODULE GBIC 10G 10GB SFP - 1 Year Warranty
$39.99
Genuine Cisco SFP-10G-SR V03 10GBASE-SR SFP+ Transceiver Module 10-2415-03
$8.00
FLYPRO Fiber 10GBase-T Transceiver, SFP+ to RJ45 10Gb Ethernet Copper Module
$40.00
New Cisco w/ Green Hologram SFP-25G-SR-S 25G SFP28 SR 850nm 300m LC MMF Module
$64.39
CVR-QSFP-SFP10G Cisco 40G QSFP+ to 10G SFP+ Adapter Modules 74-9474-02 V01 V02
$74.99