Nuvoton has an adapter called @b{Nu-Link}.
It is available either as stand-alone dongle and embedded on development boards.
It supports SWD, serial port bridge and mass storage for firmware update.
-Only Nu-Link v1 is currently supported.
+Both Nu-Link v1 and v2 are supported.
@section USB CMSIS-DAP based
ARM has released a interface standard called CMSIS-DAP that simplifies connecting