Although you can buy custom cables or extension for your power supply, it can often fetch for hundreds of dollars. Those are the machine-made ones, with the truly custom hand-made options costing even ...
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, 12V) and the ...