Although I can't think of any reason why I might have had such a thing in my spares box, I have to believe that the maverick USB card above was from the PeeCee world. It was made, as many such are, by Anonymous Inc., and the maker's number in ASP was no help at all.

However, when I replaced it with a known-good card from another Mac and re-installed the USB Support 1.4.1 from Apple (not least because I had also upgraded the OS on the 9650 to 9.2.2), the misbehaviour went away.

de
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(60x) 13DT + 3PB + PTPro; (G3) 7DT/MT; (G4) 3T + PB. System 8.1 to OS 10.5.8