HP LaserJet Enterprise flow M830 Multifunction Printer series - Manual (Page 45)

5. Align the toner cartridge with its slot, and then
insert the toner cartridge into the product. The
toner cartridge will drop slightly when it is in
place.
6. Push the button on the lever, and then rotate the
toner-cartridge lever to the up position.
7. Close the front door.
ENWW Replace the toner cartridge 35