stalker 2 pin usb5v

Hello. If i supply my seeeduino stalker2 from the solar pin with 5v I only obtain 3.3v on the USB5V pin. If i supply from the usb adapter I obtain 5v. Is there a way to obtain always 5v on USB5V pin also if I am supply the system with the solar socket? Thanks

The best way is connect the 5V to Program port.
5v to USB5v, GND to GND.