No. The Intel Evo-Certified, Lenovo Yoga 7i 14 model number 82BH0006US, ships with 12GB Soldered DDR4-3200MHz RAM, Memory soldered to systemboard, no slots, dual-channel and is not upgradeable.

No. The USB port on the Lenovo Smart Clock with Google Assistant, is for charging compatible external devices like a compatible phone.

There is a 30-day trial of Microsoft Office 365 included as part of the Windows 10 operating system. In order to keep the program active after the trial period, you will need to purchase a product key. You will not need to download any additional software. Additionally, the Lenovo IdeaPad 3 15 Laptop, model number 81W1018XUS, ships with Windows 10 S-Mode, 64-bit Operating System. Windows 10 S-Mode provides added security by only allowing APPs available ( and therefore certified by Microsoft) at the Microsoft Store. If you don't need the added security or you need to install APPs not available at the Microsoft Store, you can switch to standard Windows 10 Home 64-bit Operating System, at no additional cost. If you choose to switch from S-Mode to Windows 10 Home Operating System, here is a link to instructions for switching from Windows 10 S-Mode to Windows 10 Home: https://support.microsoft.com/en-us/help/4456067/windows-10-switch-out-of-s-mode

That really will depend on the requirements and compatibility of the specific APPs you will be using. The Lenovo Chromebook 3 11 model number 82H40000US, ships with the Chrome Operating System and is compatible with Google Play Store APPs. We recommend you check with the specific APPs software publisher's web sites, of the APPs you will be using, for their compatibility with the Chrome operating system and the minimum/recommended hardware requirements (Is a Graphics card required, the processor speed and the minimum required system RAM and the minimum available hard drive space) to run their program, then compare those requirements to this system's configuration.