So you have an LK 100 amper? You linked an old style PM on Amazon--not the same thing. Confusing.
Here is the LK--internal fan, the two holes in the side, except this photo is the 55 amper with the two fuses. The 100 amper has four fuses.
https://www.amazon.com/Powermax-PM3-100LK-Power-Supply-Light/dp/B01MS4F5QTAnyway, a heck of a price for a 100 amper with adjustable voltage-- Holy Cow! Plus you can switch it to the auto 3 stage and just leave it, if you want.
Some PowerMax customers like car showroom folks, have asked them to just leave it as a 3 stage on delivery and tape over the holes! :)
Too confusing it seems. :) Of course we RVers are way smarter than that, and can really appreciate just what this is!
