multicomp pro MP710080 User Manual page 6

DIAGRAM SHOWING CIRCUIT BOARD OR DEVICE
Connecting outputs in series (using MP710080 as an example)
You can have a 17V fixed output by connecting the 5V in series with the 12V outputs.
The 2 outputs (Aux.1) can be connected in series to make a variable 5V to 41V with maximum current 2A (Fig. 2)
The 3 outputs can be connected in series to make a variable 17V to 53V with maximum current 1A, (Fig. 3)
There are other combination of cross connections for different positive and negative output voltages.