Originally Posted by Matt 26z

Assuming this is a second hard drive for added storage...

If it came with a thin (but wide width) gray wire - IDE -

Hook the drive up to the same wire in your computer that is already attached to your current drive. There should be an open black plug available on it. Read the manual to see if you'll need to change the jumper for it to be a slave drive.

If it came with a smaller red wire - SATA -

Hook that up to your new drive and hook the other end where it fits into the motherboard. You can't really mess this up. Just find where it fits.

If your old drive is an SATA and your new one is an IDE -

Use the wide gray cable it came with and plug that into your motherboard. Should say "Primary IDE" or something next to where you plug it in.