Amazon.com: DoorStepInk Remanufactured in The USA Ink Cartridge Replacements for HP 901 XL 901XL Black MICR for HP Officejet 4500, G510a, G510g, G510n, J4524, J4540, J4550 J4580 J4585 J4624 J4660 J4680 :
HP Officejet 4500 All-in-One Printer Series - G510 Software and Driver Downloads | HP® Customer Support
Amazon.com: Printronic 2 Pack Remanufactured HP 901XL HP 901 Ink Cartridge for HP Officejet 4500 J4580 J4660 J4550 J4540 J4524 Printers (1 Black 1 Color) : Office Products