MT841 Wireless Card ?

[ameetsd]

I have a MT841 Huawei modem which I was using from the past 2 years. I am searching for the WLAN Card WCBG03H for the MT841 modem. Pune BSNL don't seem to have this one. I read somewhere in the forum that only the WLAN Card WCBG03H from Huawei works. Does any one know if any other 802.11G wireless card works with this modem ? Any help / suggestions would be appreciated. Thanks, Amit