Thanks for your awesome help.
Now we have the Orange Pi Pc emulating an USB to another computers and we can open, copy and paste files form/to them. But we need to connect to an LED Panel and the panel card do not receive the Orange, we put the led program in the usb space given for the Orange but the Led card do not change the LED Panel program. We think that the problem is that the orange give energy to the card, and the card don't accept the energy and that is blocked, but we tryied cuting 5v cable from the usb and we dont have a possitive result, in both situations the card try to read the orange like an usb but not install the led program. Can you help us with that? How can we suspend the energy? or can you help us with other solution?