Rev 12 introduces a on all card-side lines:
Official schematics are proprietary, but you can find circuit diagrams and pinouts through the following types of resources:
The identifier DS80249-P REV 12 typically refers to a specific motherboard revision found in Hikvision Digital Video Recorders (DVRs)
If the DS80249 board is part of a larger system (e.g., a radar display, an industrial CNC machine, or a medical imaging device), contact the , not the PCB vendor. Request the "Engineering Drawing Package" for the specific end-item. Reference the "P Rev 12" specifically.