If you use any Pannelbuilder or Plus Panels switch to red lion the are about half the cost and are rock solid it took me a project to warm up to them but you can call them without paying an unholy amount for service like AB and the graphics are very good they all have web servers,Ftp Servers and much more. You don't need a kepware driver to make it talk and the software is free ....... and for the price of a PV 550 Ethernet you can buy 2 1/2 for the same price and their about the size of the size of a PV 600. I want some 10 ad 15" to get rid of some of my PV 1200 and 1400's in the plant I had been using PV plus but they suck if you us RS view the ME addition is very lacking and it cost way to much and as usual there are bugs that AB wont tell you unless you pay them for their crappy tech connect support. I Miss the days i could call them for free from 9 to 5 but now they are greedy and most of the hardware is made in Asia and we are being charged American prices and that ****es me of.