DynoJet Power Commander for the 2005-2008 Polaris 800 Twin EFI. The Power Commander IIIusb was introduced in 2003 and utilizes the same "direct injector control" technology as the PCIII. The USB (Universal Serial Bus) port provides an instant, no-hassle way to connect the Power Commander module to a computer. This model also features an expansion port for future add-on modules like an ignition module.