HP 5851-7347 is a scanner control board (SCB) for supported HP FLOW multifunction printers. It is a replacement board for the scanner control function in the listed machines.
The distributor specifies this part for FLOW models only. Listed compatible devices include the Color LaserJet Enterprise M681f, M681z and M682z MFP, plus the LaserJet Enterprise M631h, M632z and M633z MFP. The catalog also lists J8A08-60103 as an identical sales part number.
Use this board for the scanner control role in those supported FLOW printer models.