Support for LaCie USB external peripherals exists in LaCie's Silverlining driver from at least v6.2.1 upwards, and maybe v6.1.x (if such exists). 6.2.1 will not run under/with Mac system software less than v7.5.2. Whether you could use this to attach a USB peripheral successfully is speculative at best. It was not for nothing that I quoted OS 8.6. Fully PPC-native code and the earliest comfortable USB support by Apple comes with that version.

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