4Push the print cartridge firmly down into the correct carriage stall. The color of the label must match the color of the dot above the stall. The following illustration shows the yellow cartridge being installed:
5Snap the print cartridge toward the back of the copier (until the cartridge can go no further).
6When all four print cartridges are securely in place, close the lid of your HP Color Copier 210.
HP Color Copier 210/210LX User’s Guide