Based on the motherboard model number , this is an OEM board manufactured by Acer (often found in Aspire desktops like the Aspire XC-890, XC-895, or similar small form factor PCs). Because this is a proprietary motherboard used in pre-built systems, a traditional "retail style" user manual with detailed pinouts is rarely published by Acer for public download. Acumin Variable Concept Font Download Free Fixed - Topic Is