The Lenovo IdeaPad Duet 5 Chromebook, model number 82QS001HUS, is a 110V device. It does ship with a Dual Voltage, 30W USB-C (2-pin, wall-mount) AC adapter/charger with a USA compatible wall side plug. To use this Chromebook outside the USA, you will need to add a compatible wall side plug adapter, compatible with the country that this Chromebook will be used in. This wall side adapter is sold separately.

That will depend on the requirements and compatibility of the specific APP you want to use. This Lenovo IdeaPad 3 15 Laptop, model 81X800ECUS, ships with Windows 10 S-Mode 64-bit Operating System installed. 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. We recommend you check with the specific APPs software publisher's web site, of the specific APP you will need to use, for their compatibility with Windows 10 S-Mode 64-bit 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. If you choose to switch out of S-Mode for Windows 10 Home: 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

This Lenovo IdeaPad 3 15 Laptop, model number 81X800ECUS, ships with Windows 10 S-Mode 64-bit Operating System installed. There is a 30-day trial of Microsoft Office 365 included as part of the Windows 10 operating system, which includes the PowerPoint APP. 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. This model ships with a Non-backlit, English Version, standard QWERTY keyboard with 10-Key Numeric Pad included.

The Lenovo IdeaPad 3 15 Laptop, model number 82H801DQUS, ships with Windows 11 S-Mode 64-bit Operating System installed. The IdeaPad 3 15 Laptop, model number 82H8018SUS, ships with Windows 10 S-Mode 64-bit Operating System installed.