The HP B3Q10-60111 ADF assembly is a simplex document feeder assembly for supported HP Color LaserJet Pro multifunction printers. It is a printer service part intended for the automatic document feeder, which handles documents for scanning or copying.
This exact part number is listed for the HP Color LaserJet Pro MFP M281fdw and HP Color LaserJet Pro MFP M377dw. Its simplex designation identifies the feeder assembly variant, distinguishing it from other ADF parts. The listing names it “Assembly-ADF Piledriver Simplex,” providing a precise identification for replacement-part cataloguing and service work.