On page 4, there is an "IDE Power" connector. It looks a lot like a 4 pin CPU fan connector, but it (obviously) provides different voltages that are appropriate for 3.5" IDE drives (5V ...

I need to extend the IDE cable going to the slim-style DVD drive in my mom's computer. The problem is that it uses a weird 50-pin IDE connector, which carries power as well as the IDE signal.< ...

It plugs into the old-style 40-pin IDE rectangular connector and four-pin Molex power ... the rear panel is also home to a 3-pin RS232 port, 4-pin USB port and jumpers for RAID 0 and 1 selection.

ribbon cable can be used for all kinds of things including IDE drive connectors and even GPIO cables for modern electronics projects.