HPLJ M706 Separation pad
similar models 5200/M435/M701/M706 CANON 3500
HP LaserJet Pro M706 — meaning the part style or assembly for the Tray 1 paper feed is shared or very similar across these printers.
This is the paper separation pad used in Tray 1/Multi-purpose tray of the HP LaserJet Pro M706 series printers.