Using a Maestro 12 channel with an external power for the servos. I mistakenly had the USB from the computer connected to the Maestro while also having the VSRV = VIN jumper connected. Does that create any problems with the Maestro or the servos?
The Maestro has a built in power multiplexer which defaults to USB power when it is connected. The VSRV=VIN jumper simply supplies VIN power to the servo power rail, so there is not danger of damage when you connect the Maestro to a USB power source like you have.