How to view the serial port number of win7 64-bit system?

The serial port is one of the more common communication interfaces. Generally, the desktop will have a separate serial port, but the notebook does not. It needs to use the USB to serial cable. When the USB to serial port driver is installed for the first time, the serial port number is WINDOWS. automatic allocation. Many softwares do not automatically detect the serial port number when using the serial port. You need to manually select it. At this time, we need to know which serial port number is used. The steps provided below are operated on the WIN7 64-bit system. I hope I can help you.

1. Double-click the "computer" icon on the desktop to open the "Computer“ page as shown below.

2, then select ” system attribute “, as shown below.

3, of course, you can also right click on the desktop & rdquo; computer & ldquo;, select & rdquo; attribute & ldquo; this one.

4. On the system property page that opens, select ”Device Manager“

5. After popping up the device manager, you can see the port (COM and LPT) <; this item, as shown below.

6. After clicking the port option, the current serial port list will be displayed. The information of all serial ports is displayed here. If you don't know which one is the case, you can plug and unplug the serial port and respond. That one is what you need. The serial port on the desktop is COM1 by default.

Note: The notebook also needs to be plugged into a USB to serial cable.