Motors do not run after APM is plugged off from pc usb

Hi all,

I am having this problem, motor testing and transimitter runs fine on Mission planner when connecting to the PC. However, after disconnecting from PC, no response from the motor when moving throttle.

Note: JP1 is on, running 5V on apm from S500 PDB

Do i need to have the power module for APM?

Using a power module is always better.
Can you post a video of the problem?