Re: iMac upgradability

[Barry@netbox.com (Barry Twycross)]

In article <B26E3CBD-7777F@195.57.97.239>, "Bennett Rudder" <malk@tnet.es>
wrote:

>Also, keep in mind that a USB bus can support 127 devices. And the
>iMac has two USB buses

The iMac has only one USB bus, it has 2 ports on the one bus.

>It can be daisychained, but
>works best if you use hubs, which are widely available, average around
>$70. 

You can not daisy chain USB, you can only attach a USB device to a hub. If
a device appears to support daisy chaining, its because the device has an
embedded hub.

>And try as I might, I can't imagine what I would want more than
>254 devices for.

You can only have 126 so you'll have to have a very good imagination for
the 128. (The internal hub takes up one device.)

>Also,
>it's not clear how upgradable the processor is. The processor is
>soldered to the mother board.

The processor is on a daugter board, not the motherboard. It'd be quite
easy to swap out, the problem would be the boot ROMs which are also on the
processor module.

-- 
Barry
Barry@netbox.com                       <http://www.netbox.com/barry>
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