USB Servers Statuses.
Each computer has its own status. Computers' statuses depend on whether USB device is located in the Window of USB devices available for sharing or in the Window of USB devices available for connecting.
Statuses of USB Servers where you are connected
In the second tab "Remote USB Device available for Connect" you can see the list of USB Servers that were added to your configuration.
There are three kinds of icons:
icon means that the connection to the remote USB Redirector is successful;
icon means that the connection to the remote Linux USB Server is successful;
icon means that the connection to the remote computer is failed.

Connection fails in the following cases:
when it is impossible to connect to the remote computer over local network or Internet;
if USB Redirector versions are different;
if your computer placed in Black List on the remote computer!;
