Each spool comes with an EEPROM chip (Electrically Erasable Programmable Read-Only Memory) or a DRD chip (Dongle Repair Device) for uPrints®. These proprietary Argyle/Bolson chips “shake hands” with the users’ machine and ensures the material will run seamlessly. So now monochromatic uPrint® machines can print in color! And Fortus® owners can switch between PC-ABS and straight ABS. Expand the capacity of your machine without software upgrade fees.