Data cable
To avoid damaging the memory card or corrupting data, do not disconnect the USB data cable during a data transfer.
Transfer data between your device and a PC
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Insert a memory card in your device, and connect the device to a compatible PC using the USB data cable.
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When the device asks which mode to use, select Mass storage. In this mode, you can see your device as a removable hard drive in the PC.
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Transfer the desired data between the PC and your device.
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End the connection from the PC (for example, from an Unplug or Eject Hardware wizard in Windows) to avoid damaging the memory card.
To modify the USB mode settings, select 
> Settings > Connectivity > USB .
To change the USB mode you normally use with the data cable, select USB connection mode.
To set the device to ask which mode to use each time you connect the USB data cable to the device, select Ask on connection > Yes .
To use Nokia PC Suite with your device, install Nokia PC Suite on your PC, connect the USB data cable, and select PC Suite.