The HP ADF hinge assembly A8P79-60014 is a replacement hinge for the automatic document feeder on compatible HP multifunction printers. It provides the feeder assembly with its hinge connection.
This is the right-side hinge, listed for the HP LaserJet Pro 521dn and 521dw. It is also identified for the M521, M425 and M570 series. The part is black and supplied as one piece.
The listing gives A8P79-60011 and 679339 as OEM references for this part.