Unknown red switch
Hi, I just noticed that on that back of my computer, where all the wires are, there's this very small red switch under the power supply. If I flip it to one side, it says "230" and if I flip it to the other side, it says "115". I tried looking at the manual for my computer but it doesn't say what it is.
Is this some type of power switch?
(And perhaps this is the reason why my computer always restarts suddenly and saying it recovered from serious error? People told me it has to do with an uneven power supply or fan not working, which my fan works perfectly.)