USB ports not visible in RouterOS on Alix2 board

I have installed RouterOS on Alix2 board. The next problem which I’m facing is that the RouterOS doesn’t see the USB ports which are available on the board. Actually there are 2 USB ports. In the “System” —> “Ports” I see the following :

alix_board_ports.png
The question is :
How to make the USB ports visible into RouterOS ?

Actually I solved the problem. When I’ve connected the 3G modem into USB port, it started to work and the USB port appeared in the list :slight_smile: The ports aren’t visible when the don’t have a connection hooked up.