It is a flux resistor. It slows the discharge rate of the flux capacitor making the time reentry smoother.
Seriously though, ManMan has it right. It is a diag tool for Macs. There are different ROM cartridges for different Macs. THat is all I know.
Seriously though, ManMan has it right. It is a diag tool for Macs. There are different ROM cartridges for different Macs. THat is all I know.