My guess is a mirror card as well. I did some work on some PowerMac 
5300/100 LCs back in the day that had something similar on it, though I 
seem to recall it hooking into the motherboard somewhere rather than an 
LC PDS slot. It's a shame it doesn't include a closeup of the one chip. 
I think I still have one of the things, could probably dig it out. It 
definitely wasn't a PDS card though, just a ribbon with a DA-15 plug on 
a little board and a connector on the other.

Scott

Nate Raymond wrote:
> Haven't seen that card before, but it can't be a typical LC PDS video 
> card, there's no graphics chip and supporting circuitry.  It's got to 
> simply re-route video from somewhere else, and that connector on the 
> card looks like the same type that connects things like the MPEG-2 
> hardware decoder Apple made for some of the LC series to the AV 
> circuitry in some of those systems... makes me wonder if this was 
> simply designed for schools so certain LC Macs could simply hardware 
> mirror internal video (for an all-in-one LC design) to an external 
> monitor, such as a projector, so a presentation could be made or a 
> class demonstration made.
>
> On Tue, Feb 24, 2009 at 9:15 AM, Ivan X <[email protected] 
> <mailto:[email protected]>> wrote:
>
>
>     I came across this odd-looking Apple LC PDS card on eBay. The seller
>     tentatively calls it a video card, presumably due to the DA-15
>     connector, but it's not clear... And what's the internal connector
>     for? I can only guess that this a part that was preinstalled on some
>     LC or Performa models, but if so, then I don't know what it does.
>
>     http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190282938584
>     <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190282938584>
>
>     I tried searching for the product number and came up with nothing.
>
>     Does anyone know what this card is?
>
>
>
> >


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