Acer Mg43m Motherboard Manual Link Info

Look for a two or three-pin header labeled or "CLR1" . It is usually located near the bottom right corner, next to the front audio header. There is no button. You have to move a jumper cap from pins 1-2 to 2-3 for ten seconds.

Spoiler alert: You aren't going to find it. Acer Mg43m Motherboard Manual

You search for the manual, hoping for a detailed schematic of fan headers, overclocking menus, or RGB control. Look for a two or three-pin header labeled or "CLR1"

The manual won't show you a photo of this. You just have to hunt for it with a flashlight. The MG43M is fine for a retro Windows 7 build or a basic office PC. It usually pairs with an Intel H61 or H67 chipset (check the large chip under the heatsink). You have to move a jumper cap from