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Phoenix32 · 03-22-2008, 10:36 AM

At first, it does appear the 725N and the 4200/4500 share the same motherboard etc. BUT, after much closer examination, the boards are different. The BIOS chip (not just the bios itself) and some other components I won't go into here are different, making the board very different. They are NOT the same unit. And, no David, none of them ever ran the Guardian OS.

03-22-2008, 10:36 AM	#8
Phoenix32 Thermophile Join Date: May 2006 Location: Yakima, WA Posts: 1,282	Re: Trouble Upgrading HDD on 4100 At first, it does appear the 725N and the 4200/4500 share the same motherboard etc. BUT, after much closer examination, the boards are different. The BIOS chip (not just the bios itself) and some other components I won't go into here are different, making the board very different. They are NOT the same unit. And, no David, none of them ever ran the Guardian OS.