| Subject | English | Portuguese |
| comp., MS, Braz. | Activation Key | Chave de Ativação (The unique, 25-character number that activates prepaid computing with Windows) |
| comp., MS | multi-activation key | chave de ativação múltipla (A product key that is provided to Microsoft customers who choose a Microsoft Volume Licensing program for their organizations and that allows multiple installations of a particular product. The key is assigned to a company or institution intended for their sole use and only for distribution to employees or third parties who are authorized to install and distribute licenses pursuant to the terms of their license agreement) |
| comp., MS | multiple activation key | chave de ativação múltipla (A volume license key that is used for one-time activation with activation services that are hosted by Microsoft) |