 It was also the only Amiga to use a PC form factor for the motherboard (AT), and one of the few to use a lithium battery instead of a nickel–cadmium rechargeable battery, vastly reducing the risk of leaking corrosive fluids onto the motherboard and causing damage with age.Modularity was another unique aspect to the machine, with the CPU, audio, video, and input-output ports all on separate daughterboards.This made the machine near-modular.