Use the netstat -na command in the DOS window to check the port number of the computer. Enter CMD in the operation of the computer, open a DOS window, enter the above command, and check the port number of the current computer. The specific operation method is as follows:

Equipment: Lenovo Xiao Xin pad Pro 1 1.5 inch computer;

Operating system: window7 7 7 Ultimate Edition.

1. Click Start in the lower left corner of the computer, and then select Run.

2. Enter CMD in the dialog box that appears, and then click Run.

3. Enter netstat -na in the open DOS window, and then press Enter.

4. At this point, you can see all the current port numbers of the computer in the data that appears.