Replacement for Dell 341-2919 - Compatible Black MICR Toner Cartridge (21000 Yield) for Dell 5210, W5310. MICR is an acronym for Magnetic Ink Character Recognition. MICR Cartridges are used for printing checks. Banks read magnetic ink differently than standard ink, which allows them to reliably process checks. Magnetic Ink Recognition Toner; Regular toner mixed with IRON OXIDE particles, recognized by scanning devises. Mainly used for Check printing and bar coding. Built with NEW drums and NEW components that match all ABA standards (American Bankers Association). Dell 5310 MICR Toner - Dell 5210 MICR Toner - This Compatible Dell 5210n MICR toner, 5310n MICR toner is also known as a 341-2916 MICR and 341-2938 MICR. For use in Dell 5210n, 5310, laser printers, this MICR toner cartridge replaces part numbers 341-2915, 341-2916, 341-2918, 341-2919, 341-2937, 341-2938, 341-7236, 341-7237, GD531, HD767, PD974, TD381, UG215, UG216, UG218, UG219 MICR.