Personal Laser Multifunction Printer HP Laser MFP 135w This printer employs dynamic security mechanisms to prevent cartridges with non-HP chips from operating, and it is only designed to function with cartridges that contain a new or repurposed HP chip. Regular firmware updates will keep these safeguards in place and prevent previously functional cartridges. Remanufactured, refilled, and reused HP chips allow the use of cartridges.