The Lenovo IdeaPad S340-15 Laptop, model number 81QG000DUS, ships with an AC adapter/charger and a 10-key numeric keypad along with its standard QWERTY keyboard. This system uses Windows 10 S-Mode 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. Whether this configuration is compatible with specific hardware/software will depend on the requirements and compatibility of that specific hardware/software. We recommend you check with both the hardware and the software publisher's web sites 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.

The Lenovo IdeaPad 3 15 Laptop, model number 81WE00NKUS, is not user upgradable. A certified technician must do all of the work, so as to not void the warranty. This model ships with a 256GB NVMe TLC solid state hard drive. We recommend you consult your certified technician about your storage upgrade options.

You can change the language that Windows 10 displays.

That will depend on the requirements and compatibility of the APPs and software that will need to be used. The Lenovo IdeaPad 1 14 Laptop, model number 81VS009GUS, is an entry-level configuration. It ships with a 300p webcam and microphone built in. It uses the Windows 10 S-Mode 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. We recommend you check with the specific APPs and software publisher's web sites that will need to be used on the computer, 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.