If the drive is ok, it's here.

If there is no drive, it will be here.

It is recommended to download the latest STC-ISP, which will automatically detect the interface.

No serial port

Automatically select after inserting serial port.

The old version of STC-ISP needs to manually select the serial port, and sometimes you have to go to the device manager if you don't know the serial number. It's troublesome. It's recommended to download a new version.

The download address is in Hongjing official website.

www.stcmcu.com

At present, USB to serial port drivers are basically pl2303 ch340 ch34 1. These drivers are easy to find on the Internet.