This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
If it were not okay, I would have fried plenty of hardware. I do this all the time. I have seen no problems with having some devices off. As I have mentioned, I keep my magneto optical off most of the time; and, my buddy who uses my 700 now has a flatbed scanner and leaves it off most of the time. Both work fine. By: Randy Shackelford
 
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