The setting method is as follows. 1. Right-click (My Computer), and then click Properties. Pop up the (System Properties) dialog box, select the hardware, and click (Device Management). 2. Select (port), find the USB port you installed, right-click the display (properties), click the display properties dialog box, and select (port setting) to set the COM port set in the dialog box as the serial port you need. If you have any questions, please leave your contact information and I will contact you. Divide the money among them.