Reverse power through microUsb

Hey , am using an opencr board with turtlebot3 burger and raspberry pi4. when raspberry pi is powered seperatly and opencr gets powered via microusb. DOes this damage the boad??

The OpenCR1.0 board cannot safely power connected DYNAMIXEL actuators using USB input power.

To operate DYNAMIXEL servos, power must be provided through the available barrel jack or dean’s plug inputs.