This worked perfectly from the first time I plugged it in. The only problem is the power adapter has both a US 110 volt edison plug and a European 2 round pin plug adapter that fit into a common socket on the power supply. The fit was tight enough to make the connection, but too loose to stay plugged in. I happened to have some brown spike tape and was able to tape the plug adapter between the pins on the plug adapter to hold it in plus, but it is a bit of a kludge job. Hey, gaff tape fixes everything.