SUZE .. the Qtel Broadband USB is 21 mbps but your speed will b always upto 3 Mbps.
but
if you want a share USB connection with all of you, you need me to assist you so that you will not need to buy 3G wifi(500QR)

USB can b share via your Laptop WIFE or LAN..

So PM me if you want more Info

USB monthly charges 320/M