The board seems to be very selective on the power provided on the STLINK port. Even with an USB 2.0 external powered hub, it often does not power on. The board seems to need 5V/3A. That would mean a USB C Hub, (USB 3.0 Type A max is 0.9A) or using USB C port on a host to power to also have access to the debug UART . Another solution would have been a split cable for the STLINK port with one end to power the board and the other to the host. The manual states a USB C to A cable is needed but it a bit vague about STLINK it needs a USB-C host.
USB A 3.0 is only 0.9A max and it seems not enough (at least for initial power on). Some USB C to A (brand new) cables won't power on the board connected to the STLINK connector and some others do, that even with a type A USB 5A power charger. Some different LED conditions occur in this case.
1. LD5 RED blinking and others off.
2. LD5 and LD6 always on RED
Could not find these status on the manual. What do these mean ?
According to an USB-C power meter while running 3D and video demo and using the network us runs at 400mA. Which would mean it should be able to run off an USB A 2.0 bus powered Hub or a direct PC host connection with USB 3.0 A Type. Why the 5V/3A requirement ? If you don't have a USB-C host port on the PC (which is 5 meters away from my work desk, too much for USB-C), then you may be out of luck powering it while using ST-LINK debug port.
With an USB C to USB A 3,0 cable to an USB 3.0 host type A, it powers on but powers off once the Video subsystem is started. After that current draw is 0.4A@5V. Perhaps there is a current spike over 0.9A at that time.
