Here there seems to be the only true and original power supply for the Samsung S4. I've just tested, and it loads just as fast as the power supply, which came with the purchase of the S4.
It looks like the original. Although no OVP, but a similar band as the packaged S4. The enclosed the S4 power supply was manufactured in Vietnam, supplied by here is from China.
Save yourself the search for long, and buy it right here.
