Electronic device and power switching control method

An electronic device, comprising:

• a basic input/output system (BIOS), configured to generate a first handshake command when executing an update mode;
• an embedded controller, coupled to the BIOS and comprising a general-purpose input-output (GPIO) pin, wherein the embedded controller performs a handshake procedure with the BIOS according to the first handshake command, and determines a voltage level of the GPIO pin according to the first handshake command;
• and
• a control chip, coupled to the GPIO pin of the embedded controller, and configured to determine a power switching waiting time of a power switching unit according to the voltage level of the GPIO pin,
• wherein the embedded controller transmits back a second handshake command to the BIOS according to the first handshake command, wherein the first handshake command and the second handshake command have a same encoding structure.