When the target system operates on independent external power, configure the software programmer settings to "Status: External" rather than "Power Cycle". Forcing the MiniProg3 to supply power to a circuit that is already energized can create electrical ground loops, destabilizing the USB subsystem or generating data packet corruption.
It provides a 10-pin patch strip header alongside a high-density 5-pin header to support space-constrained custom PCBs as well as legacy development boards. psoc miniprog3