The main difference between the weBoost Office 200 Installed and the weBoost Office 200 (DIY Installation) lies in the installation process. The weBoost Office 200 Installed comes with professional installation, where an authorized technician will visit your medical office to install the booster for you. On the other hand, the weBoost Office 200 (DIY Installation) is designed for those who prefer to install the booster themselves, saving on installation costs.