ah..the answer was..yeah it wont do above 300mA
the 3.6 mean...
12v x 0.3 or something..making 3.6...heers the post
"That's the maximum power (watts) you can draw.
Power = amps x volts
At your maximum voltage setting (12V), and maximum current (300mA, or 0.3A) then the power drawn is 12 x 0.3 = 3.6 VA (watts)
ie. No matter what voltage you are using, do not draw more than 300mA AND do not draw more than 3.6 watts"