Is there a question here?
Looking at your list and assuming that you're pointing out that the listed hardware is not supported
1) mulitimedia controller - not necessary on a server
2) ethernet controller - hmm - I'll put one in my WHS and see, I'd find it quite surprising if it wasn't
3) PCI simple communications controller - most likely a modem - not necessary with most servers - and WHS is supposed to be used with broadband.
4) ATI5990 Graphics board - probably supported as VGA, and not necessary on what is supposed to be a headless appliance
5) Video controller - see #4 above.
What was it you were asking?