http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=2;t=004556

basically, compbatt, will exist on laptops and desktops with smart UPSs

pcmcia cards are usually only in laptops, but not all... some PCs have them for smartcard readers.

and some laptops bios may or may not provide the case type... like old inspiron 7000s, but newer ones will.
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