Path: utzoo!utgpu!water!watmath!clyde!att!ihnp4!poseidon!ech
From: ech@poseidon.UUCP (Edward C Horvath)
Newsgroups: comp.sys.mac
Subject: Re: Plugging in ADB devices
Message-ID: <526@poseidon.UUCP>
Date: 4 Oct 88 15:03:39 GMT
References: <60676@felix.UUCP>
Distribution: comp.sys.mac
Organization: AT&T Information Systems, Lincroft, NJ
Lines: 17

From article <60676@felix.UUCP>, by kehr@felix.UUCP (Shirley Kehr):
> The September issue of Macintosh II Report (Thom Hogan and Michael Swaine)
> says that "Plugging anything into the Apple Desktop Bus while the system is
> running can harm the Macintosh II's motherboard. This means that you shouldn't
> plug or unplug either the keyboard or the mouse while the system is running."

I haven't heard of this happening to anyone.  What CAN happen, and is
documented by Apple, is that plugging/unplugging can cause a spurious
reset, and that the software that manages the ADB only polls for devices at
system startup, so you may not get what you hope for.

I have moved keyboards off of and onto a Mac II and an SE while they were
running.  Both keyboards were Apple, although one was a IIGS keyboard (yes,
they work fine) and one was the Mac "standard" ADB keyboard.  Usually it
works, sometimes it doesn't.  Haven't fried anything yet...

=Ned Horvath=