Good service, the order arrived fast to my local parcel terminal. I tested its ouput using 20 volts solar panel power as input and it outputed the much higher voltage as expected and I could adjust the ouput voltage using the potentiometer screw, I plan to use it for emergency charging adapter for my electrical vechicle using high powered foldable solar panel.
works great, steps up the atx power supply to 13.8v, a perfect car battery charger.