ou can purchase the Windows 10 Pro 64-bit upgrade and install it on this laptop. Here is a link to information and instructions for switching from Windows 10 S-Mode: https://support.microsoft.com/en-us/help/4456067/windows-10-switch-out-of-s-mode

No. The Lenovo Yoga C940-14 4K model uses a Thunderbolt 3.0 port for video out to an external monitor. You can connect an HDMI external monitor to this laptop by using a Thunderbolt 3.0 to HDMI adapter.

The entry-level Lenovo IdeaPad 1 14 Laptop, model number 81VS009GUS, has a 300p webcam and microphone built in. Whether it is compatible with a specific video conferencing APP will depend on the requirements and compatibility of the specific APP. The IdeaPad 1 14 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 specific APPs software publisher'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 screen on the Lenovo IdeaCentre A540-24 All-In-One system tilts forward to a plus 5-degrees and backward to a negative 22-degrees. The screen does not swivel.