How is the on-board USB-Blaster II powered? - How is the on-board USB-Blaster II powered? Description The on-board USB-Blaster™ II solution is powered via your PCB JTAG header pin 4 and not the USB port on your computer. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']