A media cartridge includes: a base defining a media chamber and including a lower wall and an opposing upper wall; an identification circuit disposed on the lower wall, the identification circuit configured to engage with an electronic interface of a printer; a ledge on the upper wall of the base, the ledge configured to receive downward pressure from an inner surface of a lid of the printer in a closed position; wherein the identification circuit is aligned with the ledge to receive at least a portion of the downward pressure.