Yes I already understood that but is it from a laptop with a G4 Processor or a desktop with a G4 processor. A Hard Drive from a laptop not only is smaller phisicaly then one from a desktop, but has different data and power conections then those from a desktop.
If it is from a Desktop HD you will need a power source, however many external inclosures for laptop hard drives do not require a plug in power source.
is this Hard Drive from a Desktop G4 or a Laptop G4