Depends on what your current draw is to note also. This might work fine for small projects, but wont be a replacement for a laptop power supply for 4.16 amps at 19 volts. Looks like peak current is 3 amps and it likely gets warm at that current draw through that small regulator that has no heatsink. If you need more amperage a heavier power supply would be needed, and hopefully one with passive cooling and voltage regulator mounted to a heat sink to avoid melt down of the VRM.
I myself still prefer the 7800 series voltage regulators for quick projects because I can heat sink away heat and keep the voltage regulator cool.
The chip based voltage regulators that lack heat sinking are fine for low current needs, however I bought a phone charger that runs off of 2 x AA 1.5V batteries that takes 3 Volts and ramps it up to 5 Volts out of a USB port to charge a phone requiring 5 Volts from a 3 Volt supply and the VRM which was a small chip like the one in the picture of this power supply was roasting hot. I pointed my IR gun at it and it peaked at 218F it got my attention when I was feeling for heat and my finger touched it. The unit was getting warm and so I opened it up to see why it got so warm when charging my small LG smartphone with 3.5" display. I expected heavier duty electronics for passive cooling and what I found was that there was nothing to draw heat away from the voltage regulator. They had a voltage doubler circuit that brought the 3 Volts to 6 volts and then a voltage regulator to maintain the 5 Volts off of the 6 volt doubler circuit. The device is not economical for use because AA Batteries are not cheap and it will completely drain 2 Brand New Alkaline AA batteries and only get me 80% charge before batteries are spent from a phone battery that is drained to charged to 80%. These days I use the device as one last final drain for AA batteries before tossing them out. When the device they normally powered starts to show that it needs new batteries such as my wifes wireless keyboard and mouse which runs on AA batteries, the batteries are at say 70% life left but starting to make these devices act up, I will put the batteries into this cell phone charger and drain out the last of their juice to squeeze 20% charge into my phone then toss the batteries out completely spent.
I found this 2 x AA Battery Cell Phone Charger at a local Dollar Store and bought it out of curiosity for $1.00. Took my oscilloscope to it probing around to see what they are exactly doing with some chips unknown identification, then saw the doubler circuit bringing the 3 volts to 6 volts and the regulator with a clean 5 volt output. It pulls very heavy on those AA batteries but it does work! Makes you wonder how they make any money on it at $1.00 when the parts and labor to make it ourselves would go way over.