Toner sensor PC Board - Small vertical board on right side of toner cartridges
HP RM1-1609-000CN, PCB unit
HP RM1-1609-000CN. Type: PCB unit, Device compatibility: Multifunctional, Brand compatibility: HP, Compatibility: Color LaserJet 4730 MFP, Color LaserJet CM4730 MFP, Color LaserJet 4700, Color LaserJet CP4005