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VXC 2112 usb issue

Hi all,

I have a really silly issue but it is really giving me a hard time.

On a customer we have a 9971 ip phones with 2112 thin clinets. The problem i am facing is that even if i use  a power cube 4 my side usbs dont work. As a result of that i cannot connect printers etc. After some research i found that when the device is connected with a cube 4 then the Full LED ring is lit which doesnt happen on my thin client. I cant really see what it can go wrong when you connect a power cube but can anybody suggest something.

The 9971 phone is connected on a non poe switch and it is booting up properly connecting to the call manager. Also the thin client works fine apart from the side usbs mulfunction


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