General Knoppix support for those who've read the FAQ at the Wiki
New Precision DWDM SFP+ 10G 80km Tunable Transceiver 50GHz C-Temp DWDM-SFP10G-C
$90.00
Brand New Cisco GLC-LH-SMD 1000BASE-LX/LH SFP Module 1310nm 10km SMF LC
$9.50
New Sealed Cisco GLC-LH-SMD 1000BASE-LX/LH SFP Transceiver Module *US Shipping*
$9.50
NEWoriginal Cisco GLC-TE 100M RJ45 SFP Gigabit Ethernet Optical Transduce Module
$15.90
ProLabs 10GBase-TX SFP+ RJ-45 Copper Transceiver Module P/N: SFP-10GBASE-T-C NEW
$34.99
CISCO SFP-10G-LR SFP TRANSCEIVER MODULE GBIC 10G 10GB SFP - 1 Year Warranty
$39.99
IPOLEX ASF-10G-T 10GBase-T 10GbE SFP+ to RJ-45 Copper Optical Transceiver Module
$35.99
NEW FS SFP-10G-T 10GBASE T SFP+ 30M Transceiver Module (Lot of 1 Unit)
$39.95
New Sealed Cisco SFP-10G-LR 10GBASE-LR SFP Plug-in GBIC Transceiver module A
$15.80
CISCO SFP-10G-LR Transceiver Single Mode 10-2457-02 10GBase-LR 1310nm Module
$15.37