I have laptop configured with Windows Vista. I trying to set up Broad Band net connection using Huawei SmartAX MT882 ADSL modem using Ethernet port.
After struggling I'm not able to establish the connection. When I contacted the ISP Customer Care, they specify the LAN indication light should change to Green to Orange, then only you can establish the Connection. Since there is no provision for UBS drivers for this modem in windows vista. But the same modem works fine in Windows XP.
But in any case you need to contact Huawei for the appropriate software and drivers. Vista most likely requires different software and drivers than Windows XP so the fact that it works in XP is not relevant to it not working in Vista, but it does tell you the modem is functioning properly.