HP Color LaserJet Enterprise flow M880 Multifunction Printer series - Manual (Page 131)

4. Open the tray.
NOTE: The message on the product control
panel indicates which tray has the jam. The
following steps show removing a jam from the
top tray, but the procedure is the same for all
three trays.
5. Remove any jammed or damaged sheets of
paper.
6. Close the tray.
ENWW Clear jams 121