Touch-controlling device, functional expansion member thereof, and usb socket connector

A functional expansion member of a touch-controlling device, comprising:

• a USB socket connector including:
• a columnar housing having a front portion and a rear portion both respectively arranged on two opposite sides thereof, wherein the columnar housing has an accommodating slot recessed from the front portion toward the rear portion and a receiving slot recessed on the rear portion and in air communication with the accommodating slot, and a cross section of the receiving slot perpendicular to a longitudinal direction of the columnar housing is larger than that of the accommodating slot;
• a circuit board including a tongue plate portion arranged on one side thereof, the tongue plate portion having a USB3.1 Type-C interface, wherein the circuit board is inserted into the accommodating slot, and the tongue plate portion is arranged in the front portion;
• and
• an expansion board substantially and perpendicularly connected to an end of the circuit board away from the tongue plate portion, wherein the expansion board is arranged in the receiving slot;
• and
• a functional module mounted on the expansion board of the USB socket connector and including:
• a processor;
• a color extractor electrically connected to the processor;
• a light-emitting unit for emitting a white light;
• and
• a starter electrically connected to the color extractor and the light-emitting unit, wherein the starter is pressable to drive the color extractor and the light-emitting unit.

A USB socket connector, comprising:

• a columnar housing having a front portion and a rear portion both respectively arranged on two opposite sides thereof, wherein the columnar housing has an accommodating slot recessed from the front portion toward the rear portion and a receiving slot recessed on the rear portion and in air communication with the accommodating slot, and a cross section of the receiving slot perpendicular to a longitudinal direction of the columnar housing is larger than that of the accommodating slot;
• a circuit board including a tongue plate portion arranged on one side thereof, the tongue plate portion having a USB3.1 Type-C interface, wherein the circuit board is inserted into the accommodating slot, and the tongue plate portion is arranged in the front portion;
• and
• an expansion board substantially and perpendicularly connected to an end of the circuit board away from the tongue plate portion, wherein the expansion board is arranged in the receiving slot.