Free: Acer+h81h3am+v10+manual+__link__

If you are looking for the manual to reset the BIOS:

This board is commonly found in pre-built Acer Aspire TC-220, TC-605, or similar desktop models from around 2013-2015. It is a Micro-ATX board, making it compatible with standard mid-tower cases. Key Specifications: Intel H81 Express Chipset Socket Type: LGA 1150

Several websites aggregate manuals from various manufacturers, which can be a practical alternative when an official source is unavailable. A thorough "generic" manual for the H81H3-AM V1.0 is available on and may be a perfect substitute.

2 x SATA 6Gb/s ports (often 4 total connectors including 3Gb/s) 1 x PCIe x16 Gen 2.0; 1 x PCIe x1; 2 x legacy PCI slots Rear I/O

The (often branded under ECS or Acer OEM) is a durable, budget-friendly Micro-ATX motherboard designed for 4th Generation Intel processors. It is commonly found in older Acer Veriton office desktops (such as the VM2630G) and provides a solid foundation for home-office workstations or budget gaming builds.

Locate the 3-pin jumper near the coin-cell battery.

If your system becomes unstable after a change, you can reset the BIOS to its default settings by locating the on the motherboard (often labeled "CLR_CMOS" or similar). Alternatively, you can remove the round CR2032 battery from the board for a few minutes.

Intel Pentium (e.g., G3220, G3260) and Celeron (e.g., G1820).

Connect to Pins 5 and 7 (no polarity required).