>Do you have the adapter plugged into a USB3 port? Those can supply more current/power than USB2. The adapter may require the extra power that USB3 provides.
In here, you will find the specifications:
http://www.laptopmag.com/reviews/laptops/sony-vaio-duo-13This is USB 3.0.
>Even if you don't think the power plan in effect powers down the adapter, you probably should still disable power saving for it in Device Manager.
I can't find the option for that.
>If the above doesn't fix it the next step is to see if you get disconnects every 4 hours "like clockwork" or if it's random but roughly 4 hours. If it's like clockwork, note the time(s) it happens. You can then look for scheduled tasks either on your workstation or on the network that might be causing the problem.
Ok, thanks
>Also, knowing if you're getting completely disconnected, or just partially (can still see some hosts/printers etc.) can be useful for troubleshooting.
The network icon is removed when it happens. So, that would be a full disconnect.
