In one embodiment a cartridge holder includes: a body having a plurality of bays therein for holding a cartridge and each bay having an electrical connector associated therewith for connecting to a chip; an adapter removably attachable to the body at a bay, the adapter having a site for a chip at a location where a chip installed at the chip site is connected to a connector in the bay when the adapter is attached to the body; and each bay configured to hold: without an adapter attached to the body at the bay, a first cartridge having a first shape and a chip thereon, and, with the adapter attached to the body at the bay, a second cartridge having a second shape different from the first shape and the second cartridge not having a chip thereon.