The Lenovo ThinkStation P340 Tower Workstation, model number 30DH00JAUS, ships with the Firmware TPM 2.0 Security Chip that is required for upgrading to Windows 11. Microsoft is still finalizing the requirements to upgrade from the latest version of Windows 10 to Windows 11 at this time. Here is a link to more information about upgrading to Windows 11: https://docs.microsoft.com/en-us/windows/whats-new/windows-11-requirements

Although the Lenovo Yoga 6 13 model number 82ND0009US, does not include a built in ethernet port, you can connect this 2 in 1 laptop to an ethernet cable by using a USB to ethernet adapter like this one: https://www.bestbuy.com/site/insignia-usb-to-ethernet-adapter-white/6418345.p?skuId=6418345

No. The Lenovo Tab M10 Plus Tablet, model number ZA5T0380US, will upgrade to Android 10.

That will depend on the requirements and compatibility of the specific games you want to play. 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. We recommend you check with the specific game's software publisher's web sites, of the specific games you want to play, 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