Complex sentence: It is inserted into the system like a standard game cartridge, although it does require its own separate power supply, a connection cable linking it to the Genesis, and an additional conversion cable for the original model of the Genesis.
Split into simpler sentences: It is inserted into the system like a standard game cartridge. The add-on requires its own separate power supply, a connection cable linking it to the Genesis, and an additional conversion cable for the original model of the Genesis.