On 9 Jan 2005 09:35:33 -0800, wrote:

I got this list as Microsoft approved OEM manufacturers, if I bought
some Hardware from xyz comapny, if that company name was not there in
this list, that means can't I use that product in the Microsoft PC?.

No, it doesn't mean that.
You can buy whatever hardware you want.
MANY system builders selling valid licensed WIndows systems
will not be on that list.

Can that product can't be recognized by Microsoft windows?. Please let
me know. Thanks.

Whatever distinction you're trying to make, isn't relevant.
Pretend the list doesn't exist, it's not useful.