Hello Fellas

I had a bad night yesterday . I decided to add another ssd drive to my mac 5,1 . and in the process i ended up popping out the main sdd that was currently being used . The computer was off but my duet firewire was still connected. it always has a flashing light on even when the computer is off . i also noticed the the phantom power red light was also lit . but when i popped the ssd out and popped it back in the light turned off . which to me seemed weird . when i turn the computer back on my computer does not recognize the duet anymore i tried to re install maestro but nothing . i tried fidgeting with the cable but still nothing .

Im not sure know if this info might help but ...
when i first got this computer I had trouble getting it to work . i was using sierra but managed to get it working and hadn't had any trouble since . but since then i upgraded to high sierra and the duet worked perfectly . but when i poped the ssd drive of the main computer everything stopped the lights still turn on but the computer won detect the duet .

any ideas to get this working again ? im stumped