That will depend on the requirements and compatibility of the device you want to connect to this Lenovo S340-14 Chromebook. The S340-14 Chromebook ships with the Chrome Operating System and is compatible with Google Play Store APPs. We recommend you check with the hardware manufacturer's web site of the device you want to connect, for their compatibility with the Chrome 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.

Check to be sure you have the latest version of Windows 10 on the computer. Then update all BIOS files and drivers up to that latest version of Windows 10. You can easily accomplish this by scanning the computer with the Lenovo Utility software available on this computer. This system has Lenovo utilities installed to help maintain the health of the device and keep the operating system software up to date. Type "Lenovo Vantage" in the Cortana Search window (if Lenovo Vantage is not installed on your device, you can download the APP and install it now). Select Lenovo Vantage from the list. In the window that opens, click on "Health and Support". In the expanded menu, select "Hardware Scan" In the window that opens, select "Run Quick Tests". This will scan your entire system for errors. Follow any directions that may pop up. If the problem continues after this scan, now click on "System Update". First select Windows update from the menu. Scan your system to be sure you have the latest version of Windows 10. Once that scan is complete, select "Additional Updates". This will scan your device to be sure there are no new BIOS/Driver updates needed. Follow any instructions that may pop up. If the issue with the Mute Button continues, then try these steps: https://www.howtogeek.com/443702/how-to-fix-sound-problems-in-windows-10/. If the issue still continues, we recommend you contact Lenovo Tech Support for additional Help at: 877-453-6686.

The Lenovo IdeaPad 3 15 Laptop, model number 81WE00NKUS, is not compatible with any Active/Digital Pen. You can use a capacitive touch stylus as a finger replacement on the touchscreen, like this one: https://www.bestbuy.com/site/insignia-stylus-silver/3695185.p?skuId=3695185

The Lenovo IdeaPad 3 14 Laptop, model number 81W000NGUS, is not user upgradable. A certified technician must do all of the work, so as to not void the warranty. This model ships with 8GB DDR4-2400MHz RAM (4GB Soldered DDR4-2400 + 4GB SO-DIMM DDR4-2400). The maximum system RAM this configuration can support is: Up to 12GB (4GB soldered + 8GB SO-DIMM) DDR4-2400 RAM, so your certified technician can replace the one 4GB RAM stick in the RAM memory slot with an 8GB stick for the maximum system RAM total of 12GB DDR4-2400MHz RAM. We recommend you consult with your certified technician for your RAM upgrade options.