thanks @sns
i looked, my uptone power supply sent with the etherregen is 7.5v 4.8 amp dc output (seems pretty healthy)
also i read 97* temp on the top of the e-r unit checked with my infrared thermometer, by touch it feels hot but can leave my hand on it for a good while before being uncomfortable, so it is hot but not searingly so
i guess this is all well within design spec... i do hope the things lasts a long time running like that... it makes a real difference in my system