WWAN 5540 and Latitude E6520

HI, bought dell wireless hsdpa 5540 card and i can't install it on my dell latitude E6520.

There is not drivers for this laptop.

Other drivers (from latitude E6510) gives message "Authentication failed. The Dell Wireless 5540 HSPA Mobile Mini Card cannot be installed on this computer".

Does anyone know how to install those or maybe others drivers on this laptop?

Does anyone know which-one dial up manager i should be used ?

I use win7pro/x64

Regards