Data card

A data card, comprising an apparatus body, a plug fixedly connected to the apparatus body, and a cap capable of being plugged into the plug, wherein the cap is disposed with a mouse module and a mouse power supply for supplying power for the mouse module, and the apparatus body is disposed with a receiving module;

• the plug configured to be plugged into an adapted slot for the plug on a computer, and the plug is configured to be electrically connected to a chip of the computer through the slot;
• the mouse module configured to sense and calculate a moving distance of a spatial position of the cap, convert the calculated moving distance of the spatial position of the cap into an instruction for moving a computer cursor position, and then send the instruction for moving the computer cursor position to the receiving module;
• and
• the receiving module electrically connected to the plug, and configured to receive the instruction for moving the computer cursor position, input the instruction for moving the computer cursor position into the chip of the computer through the plug and the slot, so that a position of a cursor on a computer screen is controlled through the chip of the computer.