The Yikes!(PCI graphics) identifies in system profiler as a PowerMac G3.
In truth, it is a B&W G3 in a different colored case with a G4 processor and no ADB port. In fact, if you look at the LoBo, it has the solder pads for the ADB port.
It raised my eyebrows on the first one I bought, but it's 100% correct for that generation G4.