This can vary depending on local laws. In the US it is illegal to deny warranties simply for opening a chassis. So I would review the warranty information that came with your device or that is available on the ASUS website for your region.
Practically speaking, as long as you don't damage anything nobody will ever know if you open it anyway.
A bus station is where a bus stops. A train station is where a train stops. On my desk, I have a work station…