CF287A MICR, HP M501 M501N M501DN M506 M527DN MICR Toner, Premium NewCF287A MICR, HP M501 M501N M501DN M506X M506N M506DN M527DN MICR Toner is a modified HP black CF287A MICR cartridge used for check printing in your laser printer. ** This cartridge is a new HP CF287A toner cartridge modified with MICR toner for check printing. The original toner was removed and replaced with MICR toner made for this model. It is a Premium New MICR toner.** Most HP laser printers can be used as a laser check printer. All you need is a