Notebook USB switch serial port requires the designation of COM1 port number one case

The following is an example of Z-tek (USB2.0) to a serial adapter (model ZK-U03-2A):

1, according to the requirements of the installation of the adapter driver, "Device Manager/Port", you can find a "USB serial Port (COM4)", the following figure:

2, right click on "USB serial Port (COM4)", select "Properties", as shown:

3, select the "Port Settings" tab, as shown in the figure:

4, click the "Advanced ..." button, as shown in figure:

5, click the Drop-down arrow to the right of COM port number, select the desired port numbers, such as COM1, and click OK. As shown in figure:

6, click "OK".

7, at this time, the device Manager inside the "USB serial port" port number has been modified to "COM1". As shown in figure:

Test machine:

Tian Yi f50a, the Rising Sun 410a,thinkpad R61.

Test environment:

Windows xp,windows Vista.

Precautions:

1, other brands of USB to the port number settings can be referred to the above steps.

2, some models connected USB to the serial port, may not be able to set the specified port number, you can try to take other methods such as modify the registry, but can not guarantee the success of 100%.