Compatible with 2nd (Sandy Bridge) and 3rd (Ivy Bridge) generation Intel Core i3, i5, and i7 processors, as well as Pentium and Celeron.

header typically uses the following standard configuration found in the Acer Community and general ECS manuals Power Switch (PWR_SW) : Pins 6 and 8. Reset Switch (RESET) : Pins 5 and 7. Hard Drive LED (HDD_LED) : Pins 1 (+) and 3 (-). Power LED (PWR_LED) : Pins 2 (+) and 4 (-). Key Power Connectors : A standard 24-pin connector for main board power. : A 4-pin P4 connector specifically for the CPU power. : Includes a 4-pin headers to manage system cooling. The Retro Web BIOS and Support The board utilizes an AMI UEFI BIOS

Note: Pin 1 is typically indicated by a white square or marking on the board. Key Specifications

: Typically provides two to six SATA II (3.0 Gb/s) connectors, depending on the specific OEM revision.

: Users have reported challenges with BIOS updates, especially when trying to use UEFI for newer graphics cards. It is highly recommended to use the Acer Support site to find specific drivers or BIOS files for your specific system model.

Acer H61H2-AD is an OEM motherboard produced by ECS (Elitegroup Computer Systems) for Acer desktop systems like the Aspire X3990