Quick preface, I have nothing but rudimentary EE education, only what I may call "common sense" sort of knowledge.
I have 3x serial (or parallel, actually) switches, used for printers at a now defunct call center, the entire centers' equipment which I inherited via Craigslist last summer.
Two switches are 25PDT switches in a big box and the third switch is a fancy PCB switch, shown in pictures.
I have an FTP server running in Windows 7 on one PC and Debian Jessie on a separate system, and I am getting tired of switching the USB plug when I want to switch systems, so I thought I could use the parallel switch with USB wired in to accomplish this task. All wires and all circuits have shown connections, as tested with a *-rigged circuit tester I made - - the Led lights up.
The problem is that there is no connection when I put the switch into the loop. Is anyone able and willing to help me troubleshoot?
That is about all I know to inform you with. If there is any further pertinent information, please allow me to update my question with said information.
Thank you if you have read this far, as I know I can be verbose to put it