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 ...

The motherboard takes a full-size 24-pin ATX power link from the power supply, which handles most functions on the PC. Still, there's also a dedicated central processing unit (CPU) connection, usually ...