Wait a minute, are you telling that there is a "regular" European 900/E, and then there's a "US" 900/E and then ALSO there is the 900 ?
I do know the 900 and 900E are very different...
the 900 was only for europe market.
then after only a year the 900/e born (witch is IMHO one of the BEST monitor out there).
the 900/e was produced in both standard(Europe) and USA specs.
If look at the monitor you will see 2 pcb. one is the power suply, and the other the "monitor" one.
the power supply is different for the 2 version, while the other pcb is the same (more or less).
You can tell which country it was for by looking at the power and color input connector. Green for Europe and wire+white connector for USA.
Hope that help ANY