No it does not apply to external drives. I have a APG/400 and bought a 200Gig HD and couldn't use it to it;'s fullest capacity until I stuck it into an external case. It works fine now. Robert Hazelrigg rhazelrigg at earthlink.net | P. 732.483.0848 l M. 732.513.6807 126 Whalepond Road | West Long Branch, New Jersey 07764 http://home.earthlink.net/~robzilla -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/enriched Size: 587 bytes Desc: not available Url : http://listserver.themacintoshguy.com/pipermail/g4/attachments/20041027/d7e26e7c/attachment.bin