MY LAPTOP usb driver device sit_1x_usbmodem device is missing, due to which I am unable to access my TATA indicom data card. I have tried to re-install the dialler, but in vein. Problem persists. I have looked on net for the particular driver but could not find one. Please help.

MY LAPTOP usb driver device sit_1x_usbmodem device is missing, due to which I am unable to access my TATA indicom data card. I have tried to re-install the dialler, but in vein. Problem persists. I have looked on net for the particular driver but could not find one. Please help.

Check with other usb divice, like pen drive check whether the usb port is working or not.

If USB port is working then check downloading the driver again .

Just install the dialer from this link:- http://www.tataindicom.com/t-busines...rf-dialer.aspx

After this , if problem still persist contact TaTa Indicom customer care , May be the Data card is faulty.

Also try to install latest drivers for your motherboard from its manufacturer website, most probably they will have updated drivers for you. Also make sure your windows is updated to latest updates.