What is "Nokia pccsmcfd LegacyDriver" and why does it take so much space on my PC?

The driver "Windows Driver Package - Nokia pccsmcfd LegacyDriver" is installed by Nokia Suite and used if the phone is in wrong USB mode. The driver should not be uninstalled from PC if using Nokia Suite.

For some reason Windows may display wrong size for the driver, showing in some cases much bigger size than what the driver actually reserves. To fix the display issue, you can try to run defragmenting or error check for the hard disk.