On the STM32F103C8T6 there is a 5V pin, see at the bottom left of the STM:
However, in the official description from ST.com (see Link), in the table on page 28 is shown:
C2 F2 - - - 10 - VSS_5 S - VSS_5 - -
Which means the VSS 5V pin is a Supply pin. However, does this mean I can power the STM with a (USB) power adapter and connect the 5V power to this pin, or is it only for powering components connected to the STM with 5V?
Note, there are also VSS_4, VSS_3, VSS_2 and VSS_1 pins, so I'm even wondering if the VSS_5 pin is 5V, and which pin maps with with +5V on the picture.