my system does not recognize the datacard
May be the drive is bad, to confirm this try it in another system. You know the real meaning of peace only if you have been through the war.
As advised by Kuwese try it on another PCs with different version of Windows OS.
NOTE: If a USB drive is formatted with MAC OSX you will not be able to view it on My computer.
Solution for if USB drive was formatted through MAC OSX: Go to disk management on Windows OS by right clicking on My computer option at start windows and click on manage then click on Disk management. This is where you find your drive then right click it and select format then windows would detect it.Thanks.
