I was unable to source a 120vac power supply PoE injector with 180w 56v output anywhere, including major USA electrical parts distr. and even Alibaba.com in the Far East. If having your system remain operational for critical reasons, finding a back-up spare power supply might be a good idea as Starlink-SpaceX will not sell you one at the present time (6-21-21) For example if you rely on reliable internet to do stock trades, you may not be happy if you lost use of your system for an indeterminate length of time. The 8 pin contacts in the two RJ45 ports are copper, not gold plated, or if they are gold-plated, then the plating has pores in it. They oxidized and became green and black on my power supply and both indicator lights are unlit.rokonJim