Acer H81h3-am V1.0 — Manual

⚠️ Note: Some Acer OEM boards have a proprietary — do not assume standard ATX.

Do NOT connect ATX pins 1,2,4,6,19,20 (3.3V, -12V, +5V). The Acer board has no need for them. Acer H81h3-am V1.0 Manual

Usually located at the bottom-right corner. Pins 1-2: HDD LED (indicates drive activity). Pins 2-4: Power LED (indicates system power state). Pins 5-7: Reset Switch. Pins 6-8: Power Button. Pin 1: Marked by a white square on the PCB. Power Connectors: 1x 24-pin ATX Main Power. 1x 4-pin ATX 12V CPU Power. ⚠️ Note: Some Acer OEM boards have a