[SunRescue] what are these parts of Axil Ultima?

[Paul Phillips]

I have recently rescued an Axil Ultima 1, which I gather is sort of an 
Ultra 1/2 clone.  It has a 167 mhz processor, and runs well.

I have several hardware questions about it (I am not at all familiar with 
Ultra hardware).  I've posted photos of the insides at:

http://pony.partitura.com/axil

If any of you can help with identifying things, or answering my questions, 
I would be most grateful.

This thing has a motherboard that is attached to the back panel - the whole 
thing slides out as one unit.

View 1 shows the back panel.  There are three ports that I don't know what 
they are.

View 2 and View 3 are photos of the motherboard.  What kind of memory is 
this?  I occasionally see memory being auctioned at ebay, and I'd like to 
know how to identify this memory, so I could buy the right stuff.  There 
are several free memory slots.

There are some slots in Views 2 and 3 that I cannot identify.  The first is 
an empty set of two black slots, and the second is an empty single white 
slot.  These are visible in the photos.

Finally, the processor sits in a slot by itself (View 4).  If I want to 
upgrade this processor, what are my options?  Occasionally I see faster 
processors on ebay - how would I know if they would work in this machine? 
Is there a difference in Ultra 1 and Ultra 2 processors?  If so, which 
style is this?

Thanks for any and all advice or comments.

Paul Phillips