Locate the header labeled (usually found on the bottom-right corner of the board). It features a standard 9-pin layout:
Are you experiencing a with the board?
If the system fails to POST (Power On Self Test) after a hardware change, reset the BIOS settings: Turn off the PC and unplug the power cord. Locate the 3-pin header on the motherboard. Acer H81h3-am V1.0 Manual
2 x SATA III (6Gb/s) ports and 2 x SATA II (3Gb/s) ports. Processor Compatibility Locate the header labeled (usually found on the