First of all, Thanks to developers by this great aplication. It's awesome and always improving.
My conf:
VirtualBox version: 4.1.0 (last version) with USB expansion pack installed (USB 2.0 EHCI)
Host: Win7
Guest: Ubuntu 11.04
I have a connection problem with a USB device: It,s a USB Wireless LAN Card (Chipset Ralink 3070L)
From Aida64:
[ 802.11n USB Wireless LAN Card ]
Propiedades del dispositivo:
Descripción del dispositivo 802.11n USB Wireless LAN Card
Identificador del dispositivo 148F-3070
Clase de dispositivo FF / FF
Protocolo de dispositivo FF
Versión USB soportada 2.00
Velocidad actual High (USB 2.0)
The device:
http://www.crotalus.es/crotalus-usb-2000mw-802-11n/
Snapshot thit problem:

Any idea to solve this issue?
Thanks