Yes but as i explained above when 1 of those machines goes for updaes and tries to pass validation only 1 active hardware profile is on file and will be updated. The rest will fail this hardware profile validation and become inactive. Which will force you to activate them again and turn the rest inactive.
M$ keeps a record of the hardware profile. The mobo and CPU are the 2 things they keep track of. That is why you have to call for validation after a period of time. But at the same time by you activating 1 machine you deactive the rest. Which defeats the purpose. Why they didnt question how you could have 4 different mobo and cpu combos we will never know. Guess the people in India were not trained to ask these types of questions.
Before anyone gets all upset over that India comment, i have good reason for it. I called to activate my serial recently and guess what. The call went to India. So it is fact about where it goes. Not a shot at any person.