That will depend on the requirements and compatibility of the device you want to use with this computer. The Lenovo IdeaPad 3 15 Laptop, model number 81WE011UUS 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. We recommend you check with the device manufacturer's web site 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 15.6-Inch Laptop, model number 81UT00EAUS, ships with the 2-Core/4-Thread, AMD Ryzen 3 3200U processor, with a base speed of 2.6GHz and a boost speed of up to 3.5GHz.

Yes. The Lenovo IdeaPad S340-15 Laptop, model number 81QG000DUS has an internal cooling fan. The fan will be controlled by the system temperature. You can use Lenovo Q-Control to manually control fan and system performance: ( Fn + Q ) option to change the fan by undervolting the processor.

Yes. It's easy to go split-screen on your Chromebook to view two windows at the same time. To use the split-screen feature, all you'll need to do is open your apps and drag them to the corresponding halves of the screen — the computer will take care of the window resizing for you. This is a Chromebook. It uses Google Docs for office type programs. Google Docs is completely compatible with Microsoft Office Programs and this is a free service through the Google Server. If you must have the actual Microsoft Office Programs, you can purchase Microsoft Office 365 for this Chromebook at the Google Play Store.