The manual specifies . This is a cost-cutting measure typical of OEM boards.
Inside wasn’t a PDF printout or a flimsy pamphlet. It was a bound volume, perhaps 200 pages, with a matte-black cover and silver embossing that read ACER H61H2-AD: COMPLETE REFERENCE . The paper felt wrong—too warm, like skin. And the text wasn’t English. Not at first. Acer H61h2-ad Motherboard Manual
Good choice.