Apple Keyboard USB Low Power Issue

OK. I'm using a Windows machine and my G4 for a project and to save space and complexity I bought a Trendnet TK-207 USB switcher to use one keyboard, my G4's, and one mouse, a Mighty Mouse.
Both mouse and keyboard work fine powered by the HP machine but on the G4 side only the mouse works. MacOS thinks that the keyboard will draw too much current and so doesn't let it work. Since the keyboard works through the TK-207 I know that it doesn't physically draw too much but using System profiler I read that the TK-207 will supply 100mA and that the keyboard is asking for 250mA.
My question is this. Is there a way to fool MacOS into thinking that the keyboard requires less, which it does, so that I can have it plugged into the switcher all the time? Right now my work-around is to plug the keyboard directly into the G4 when I'm switched to the Mac side and to plug it back into the switcher when I'm using the HP. Not terrible but the one button push would be faster.
I've thought about buying a USB Y adapter to power the keyboard and have it inserted between the TK-207 and the keyboard. I would plug the 5V only side of the Y into a 500mA powered hub but I'm not sure MacOS would recognize that the keyboard would be getting power from another source since the data/power side of the Y would be plugged into the TK-207.
An odd situation, to be sure, but maybe someone out there knows more than I do - not really much of a stretch there. Thanks to anyone who may have an idea or could tell me that a Y adapter would work. After all, the cost of the adapter is only $15 so not much of an investment there.

I have done that. I also have tried plugging it in to a PCI USB 2.0 4-port card that according to system profiler should have 500mA available. I also have plugged it into a 7-port USB powered hub, again with 500mA/port available, with the same result, a "low power" message. It's definitely a software issue with MacOS since the keyboard works fine plugged into the kvm switch with the kvm switch getting its power from a usb port on the back of the HP computer. What I think is happening is that the embedded sofware in the kvm and the keyboard are being read by MacOS and since the kvm says it can only deliver 100mA and the hub in the keyboard says it can deliver 500mA, and the keyboard says it requires 250mA, MacOS won't let it operate. My workaround is simple, plug the keyboard directly into the built in USB port on the G4 when I'm using the Mac, but it sure would be nice to just toggle the computers using the kvm switch only.

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