For the serial detect on spi devices? or Memory modules bios thing?
If SPD on spi protocol , its not that bad just download the
specification
If you want the info from the computer memory modules my best guess is
use the stuff in "System.Management" namespace. There is so much
system info stuff available through that thing it will make your eyes
water. I dont know if SPD for memory modules will be there but there
is a good chance.
If its anoter SPI well I give up, to many similar arconyms around.
-Wazza