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Which symbol is on and off?
On/Off Power Button Symbols (I & O) Power buttons and switches are usually labeled with “I” and “O” symbols. The “I” represents power on, and the “O” represents power off.
On/Off Power Button Symbols (I & O) Power buttons and switches are usually labeled with “I” and “O” symbols. The “I” represents power on, and the “O” represents power off.