HP A2W75-67904 scanner control board is a replacement board for scanner control in supported HP multifunction printers. HP service troubleshooting identifies this part number as the scanner control board (SCB), used when specified scanner faults persist after initial checks.
The board is listed for the Color LaserJet Enterprise Flow M880z MFP and FLOW M880Z+ MFP. It provides the scanner-control function for these printer systems. This description covers the board itself; no package contents or additional specifications are confirmed by the cited sources.