Printronic 3 Pack Remanufactured HP 60XL Ink Cartridge for HP Deskjet F4480 F4280 F4580 F2480 PhotoSmart C4780 C4680 Envy 120 (2 Black 1 Color) HP 60XL black ink cartridge remanufactured replacement and HP 60XL color ink cartridge remanufactured replacement Supported printers HP Deskjet F4480 HP Deskjet F4280 HP PhotoSmart C4780 HP Deskjet F4580 HP PhotoSmart C4680 HP Deskjet F2480 HP ENVY 120 HP Deskjet D1660 HP Deskjet F2420 HP ENVY 110 Supported printers HP PhotoSmart C4795 HP ENVY 100 HP Deskjet F2400 HP Deskjet F4210 HP Deskjet F2483 HP Deskjet F4400 HP Deskjet F4500 HP Deskjet D2660 HP PhotoSmart D110a HP PhotoSmart C4700 Brand Printronic There are a few different reasons that a printer might be unable to read a cartridge. The cartridge contacts are not making a firm connecting with the printer contacts. 	This happens if you have not installed the cartridges properly or if the cartridge contacts or printer contacts are dirty. Tell the customer to make sure that both of the contact points are clean and that the cartridge is installed firmly. The printer may need to be reset. To reset a printer they can follow these instructions. 1.	Remove the cartridges out of the printer and shut printer off. 2.	Unplug printer from the power outlet and your computer as well. 3.	Turn off your computer as well (if you are able to). 4.	Wait a few minutes before turning on your printer. 5.	Turn your computer on (if turned off). 6.	Plug in the printer to the outlet and to your computer as well. 7.	Turn your printer on and wait until it starts up. 8.	Install the printer cartridges, and if alignment page does not print out automatically, try doing it manually. The reset of the printer should allow the printer to read the new cartridge.