Quoted from my-mail
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Dear Customer,
In this case, you should buy the 3users package. 1 User can be installed for 1 computer only.
should you have any question please do not hesitate to contact us.
Thank you for choosing Kaspersky Lab's product.
Best Regards,
Kaspersky Hong Kong Support Team
e-mail︰support@kaspersky.com.hk
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1 user for 1 PC. I have 2 PC and 1 notebook. Therefore I need to buy 3-user version