LaserJet M603HX

For anyone running a LaserJet M603HX, the appeal is clear: a early-2010s mono single-function printer with none of the fragility of newer machines. So many LaserJet M603HX units are still in service because everyday office document printing is exactly what this printer was designed for.

One practical upside of the LaserJet M603HX: its HP 90A/90X cartridges (CE390A) are shared with 40 other models, so you're never hunting for something obscure. Keep the LaserJet M603HX printing with genuine HP CE390A cartridges or our compatible HP 90A/90X versions; either way, the LaserJet M603HX gets the toner it was designed for.

Toner Cartridges for LaserJet M603HX

This printer works with the following toner cartridges:

HP CE390A
HP CE390X

More HP Printers

Frequently Asked Questions

Which cartridge codes fit the LaserJet M603HX?

The LaserJet M603HX fits CE390A, CE390X. The code printed on the box is what matters; matching it exactly is how you avoid returns.

When should I replace the toner in my LaserJet M603HX?

Swap the CE390A when prints from the LaserJet M603HX fade, streak, or the printer reports the cartridge as empty. "Toner low" warnings arrive earlier and still leave room to print, so keep a spare CE390A ready. Change it when quality visibly drops, not at the first warning.

How do I clear a paper jam in the LaserJet M603HX?

Power off the LaserJet M603HX, open its doors, and pull the jammed paper out slowly in the direction of the paper path — never against it. Check that the tray guides sit snug against the paper stack, since loose guides cause repeat jams. Fan the paper and avoid overfilling the tray.