I am trying to install a simple Comp USA 4 port USB- 1.0 card in a power mac 7300/200 sys 9.1 . I installed USB support 1.41 The machine sees the card, and I can get a single device to work in the lowest port. When active the external device shows in all 4 ports using system profiler. The upper 3 ports will not work at all. The card works normally in a PC. Any ideas? Thanks George