STM32H747i-DISCO embedded STLINK-V3E can't be found by computer.

[TZhou.1]

I have installed the drivers of STLink -v3 and Virtual COM. After connecting the computer with a type-a to micro-b usb cube, it can't be found by the computer.

[TDK]

Make sure you're using the right USB connector on the board. Try a different cable. Try a different USB port. Reboot.

[Tesla DeLorean]

Make sure cable is viable, charging cables won't work.

[Nikita91]

do not use a USB hub...

[Tesla DeLorean]

Hubs and docking stations can be problematic

[TZhou.1]

My problem have be solved, thank you guys.​

[Uwe Bonnes]

It is a good idea to tell here what measure had solved your problems. As you maybe profited from others help, maybe that can be of help to others.

[TZhou.1]

Silly mistake. I was tried three different usb cabels and they all were charging only cabel by coincidence. So I bought a new cabel that could transmit data then the problem got solved.