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From: George Hartzell <hartzell@alerce.com>
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Date: Fri, 8 Aug 2008 19:03:02 -0700
To: Peter Schuller <peter.schuller@infidyne.com>
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Peter Schuller writes:
 > > >>> http://www.supermicro.com/products/accessories/addon/AOC-USAS-L8i.cfm
 > >
 > > I think CDW is mistaken in saying it's a PCI-E card, UIO is a
 > > proprietary Supermicro bus that some of their motherboards support.
 > >
 > >     http://www.supermicro.com/products/nfo/UIO.cfm
 > 
 > As far as I can tell the USAS-L8i on the supermicro page is claimed by them to 
 > be PCI-E. Or are you saying the one on CDW is actually not the same card?
 > 

I've been googling around trying to figure out if UIO is the same
thing as PCI-E.  Supermicro has a bunch of motherboards for which the
description explicitly points out PCI-E and UIO slots, which makes it
sounds like they're different beasts.

Or, it could be that a UIO slot is specifically a PCI-Ex8 slot?  You
can buy risers that convert "1U PCI-E (x16) to 1 UIO and 1 PCI-E "

Supermicro's description of the card does explicitly say that it "uses
a PCI Express host interface", but maybe they mean that they're using
it in some nonstandard fashion?

It's confusing...

g.