I have to say that my experience of fitting a USB card into a 7500 (with a
G3 upgrade) belonging to one of my clients was NOT very successful. The 7200
and the 7500 have a very similar architecture except the 7200 did not have
an upgradeable CPU daughtercard. Although it did basically work, it was very
flaky � whatever combination of extensions I tried, and I pretty much tried
them all. This was with the system running 9.2.2, if I recall correctly.

There were two devices plugged into the card � a USB mouse and an Epson
SC900 printer. Both would work for a while, but both would also stop working
properly eventually. The printer was worst, and each time it stopped
communicating a full reboot of the system was necessary before it started
working again.

I never fully resolved this one, and the client just had to put up with the
system being a bit flaky. The only thing I might have tried in retrospect
would have been a different USB card � the chipsets do vary enormously in
quality, particularly the early ones. This was a fairly pukka card � I think
it was a Belkin or Keyspan if my memory serves me right.

Nick


--  
Nick Collingridge - Zapp Computer Consultancy


From: Duggie <[EMAIL PROTECTED]>
Reply-To: "Mac UK" <[EMAIL PROTECTED]>
Date: Wed, 11 Feb 2004 22:53:29 +0000
To: "Mac UK" <[EMAIL PROTECTED]>
Subject: Re: Resolution

on 10/2/04 3:40 pm, Andrew Rodger at [EMAIL PROTECTED] wrote:

> The two serial plugs for modem and printer are the basis of the usual
> peripheral connectivity but you will also have Ethernet 10/100 and
> SCSI.  there are devices which can extend the range of the serial bus I
> believe but it rather depends on what you want to connect and how fast
> the data transfer needs to be.  if you can connect to your printer with
> ethernet or SCSi it will free up the serial port. It should take a PCI
> USB card but you will need to check whether the OS can support the card
> at the sort of capability the 7200/90 has. I think the machine s really
> maxed out at OS8.6 and though OS9.1 will work it is like watching paint
> dry

My recently disposed of 7200/75 was fitted with a generic USB PCI card which
worked reliably even if it imposed a strain on the system: printing photos
to the USB printer was an exercise in extreme patience although downloading
photos from a camera worked a treat.  The 7200 ran Mac OS 8.6 and thus did
not come with the extensions required to run the PCI card.  Do a search on
the Apple support site for "USB adapter" or something similar to download
the necessary extensions (this was also posted a few weeks back on this
list).  I guess 9.1 comes with this support embedded but it would seem the
OS would just overload the system which struggled with recent software at
the best of times.

Martin


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