I've noticed that if I use a persistent image file and for some reason it gets corrupted (powering off abnormally) that I'll get a bunch of filesystem errors in dmesg. I can fix it by booting with the "noimage" cheat code, like "knoppix64 2 noimage" and then run "fsck.ext2 /mnt-system/KNOPPIX/knoppix-data.img" and then "sudo reboot".
It'd be really nice if there were an automatic check of the ext2 image when knoppix boots. It would also let you know if errors have crept into your filesystem since knoppix still works but you see weird messages like "unable to write /etc/fstab".
Cisco Meraki MA-SFP-1GB-SX 1000BASE-SX SFP Transceiver Module
$24.99
Cisco GLC-FE-100LX 100BASE-LX SFP Transceiver Module
$15.59
Cisco GLC-FE-100LX-RGD 100BASE-LX SFP Transceiver Module
$17.99
Cisco w/ Green Hologram SFP-25G-SR-S 25G SFP28 SR 850nm 100m LC MMF
$68.99
Genuine Cisco SFP-10G-SR V03 10GBASE-SR SFP+ Transceiver Module 10-2415-03
$8.00
SFP-10G-SR Original Cisco 10GBASE-SR SFP+ V02 Multi mode Transceiver 10-2415-02
$5.00
Brand New Cisco GLC-LH-SMD 1000BASE-LX/LH SFP Module 1310nm 10km SMF LC
$13.89
Brocade 10G-SFPP-LR 57-0000076-01 10GE SFP+LR SFP-10G-LR 10km - Lot of 20
$200.00
LOT OF 20 Genuine Cisco SFP-10G-SR V03 10GBASE-SR SFP+ Transceiver Module
$89.00
Nvida Mellanox MC3208411-T 1000GBASE-T SFP-TX 100m Optical 1GbE Base-T RJ45 New
$34.95