Good evening ladies and gentlemen, today I will cover the process I underwent to adapt an internal 50pin IDE optical drive to be used as external via USB, using a common, cheap, chinese adaptor and a 50pin-44pin mini IDE adaptor.
I found this optical drive and the 50pin-44pin adaptor in an old cash register-computer.
Using this with the pictured USB adaptor proved not to work, as the CD drive requires 1.5A of current, too much for a USB port.
Mini 44pin IDE differs from standard 40pin IDE as power is carried to the device with a single data+power cable.
What I had to do was to supply power to the drive by other means...
Route your cables to the power connector pins, making sure they stay as flat as possible.
As you can see, I bent the pins outwards, which will help hold the connector in place, then soldered the wires. Both the middle pins are GND, either is fine, but I wanted to distanciate + and -.
I also removed the +12V pin, as it is not needed and I did not want 12V flailing around. Just pull it out the back of the connector with pliers.
The three bent pins are then snipped so to fit on the board without protruding.
Try a quick connect test to see if power is delivered, power only, no USB adaptor needed.
All done!
The USB adaptor miraculously fits, whew.
I also made a quick Molex-floppy adaptor, as I didn't want to pull the actual floppy power cable out of my PC case. I already have a Molex coming out of it.
It powers up all right, and reads the CDs I put in it, I guess it works.
Thanks for reading, hope it helps!
It is if you have random wires coming out of your PC, or if you make this: