This inverter is not always recognized by the computer. I often have to disconnect and reconnect several times (up to 11 times!) For it to warm up and I can use it. So not practical when you have to quickly find a document (I have several times had to ask people on the phone to wait long minutes to finally access the document and give the response expected by my party, which only not serious ...). No on-off switch No light indicates it is working. Toshiba had accustomed myself to something greater good. Hopefully this is not a sign of weakness final of the brand ...
