In SX Microcontrollers, SX/B Compiler and SX-Key Tool, robotworkshop wrote:

Hello,

If you really need to pull the power ouf of the USB port then I would suggest picking up an external POWERED USB hub.  That should be safer than relying on the power from a PC USB port (laptops in particular).  They are cheap now and if something goes wrong you may only damage the USB hub and the PC may be ok.  Cheap insurance.

I ran into one USB device that was a power hog (sucked power from the USB port) and didn't work reliably.  When adding a powered HUB in between it was able to supply adequate power and everything worked ok from then on.

Your best option may just be a wall wart or a battery pack as already suggested.

Robert

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