What are PC cases used for?
The computer case serves critical functions much as skin does for the human body. System cases protect the computer chassis, hard drive, motherboard, and other internal components for advanced blade servers, computer networks, or small desktop units.
Is it safe to run a PC without a case?
“No danger to your health but your computer components might not get sufficient cooling. The case is designed to move air through the front, past the hot components and out the back(generally). Leaving the side off could cause areas within the case to not get enough air to keep them cool.