Power supply system for add-in card

A power supply system for a high-speed add-in card, wherein the power supply system comprises a motherboard device mounted on a host device, a baseboard management controller configured on the motherboard device, and a microcontroller unit configured on the high-speed add-in card, wherein the high-speed add-in card is configured on the host device, and the baseboard management controller is connected to the microcontroller unit via a system management bus;

• the power supply system is configured to control the microcontroller unit to send working voltage parameters for the high-speed add-in card to the baseboard management controller when the host device carrying the motherboard device is not turned on;
• and
• the baseboard management controller is configured to receive the working voltage parameters and select a power supply type for the high-speed add-in card, and control the motherboard device to supply power to the high-speed add-in card based on the power supply type when the host device is turned on.