OEM (Original Equipment Manufacturer) cartridges are supplies produced by the same manufacturer that makes given piece of equipment. Cartridges produces by Lexmark and for ColorJet 5700 are called OEM supplies.
Compatible Supplies for ColorJet 5700
Compatible cartridges are originally manufactured by one brand for its equipment, but can be used together with ColorJet 5700. This is possible because the manufacturers use the same engine for their devices.