Any standard USB to USB Micro cable (NOT Mini) that that carries power and data will work. If you're sure you are using a cable of that type and you can't get the screen on the scanner to change to asking it you if you want serial or mass storage mode when connected to your PC, the port on the scanner is most likely damaged.
Or....
It is always possible that the computer has a P&P issue.
Maybe look at device manager to make sure the PC is 'seeing' it?
Try a different USB port.
Reboot and retry.