No.
A 7500 PSU will not work with that G4. Same situation as with the G3. ATX is the way.(though you do have to snip and isolate the -5v and only the -5v).
A 7500 PSU will not work with that G4. Same situation as with the G3. ATX is the way.(though you do have to snip and isolate the -5v and only the -5v).