Official manuals for this specific board are difficult to find as a standalone PDF because it was an OEM part. To find documentation: Acer Support Download Center Enter your system's Serial Number
A common challenge with this board is connecting the front panel wires (Power, Reset, LEDs) because they are often not labeled. Based on Acer/Foxconn boards of this era (like the closely related RS740/RS780 models), the standard 14-pin layout is usually as follows: HDD LED (Red+/White-) Pins 2 & 4: Power LED (Green+/White-) Pins 6 & 8: Power Switch (Blue+/White-) Pins 5 & 7: Often Reset Switch (if present) Accessing BIOS acer socket lga775 pcie motherboard 915m08g8ks manual
If installing a PCIe graphics card, you must enter BIOS (press Del/F2 at boot) and set Init Display First to PEG (PCI Express Graphics) and disable the onboard VGA. Official manuals for this specific board are difficult