The Acer IPISB-VR Rev 1.01 is a proprietary LGA 1155 motherboard used in the Acer Aspire M3970 and Gateway DX4860 systems, with no official standalone manual. Users seeking documentation for this Intel H67-based board must refer to the Acer support site, or utilize community forums for technical specifications. For information on entering the BIOS and managing settings, please refer to the Acer Support article . Acer Inc Ipisb-vr Rev 1.01 Manual - Facebook