What is the metal key at the back of the PC used for?
My PC is about 5 years old old but still works great. I was painting my room and had to move the computer out. I unplugged many wires, I’m sure all were plugged back properly but i accidently nudged the key from the back of the computer. Now i can’t figure which way it has to go in to work. HELP PLEASE! AND WHAT IS IT USED FOR?
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