Power supply: How to diferentiate current source and voltage source
It appears to be a fixed voltage power supply.  12Volts at up to 2A.  It has a potentiometer marked "Vo Adjust" which would be "output voltage adjust" which would be a useful thing on a constant voltage supply

It does not appear to be a constant current supply.  A constant current supply would have a voltage range rating (say, for example, 5V-20V) and a current rating.  This has a single voltage rating (12V) and a single current rating which is typical for fixed voltage supplies.