PCISTOR\ Application and Device control blocking

What could be the devices related to PCISTOR\ ?

Basically almost all machine is a laptop , which has bulit in card reader. But it detects the built in card reader as a disk drive . We will try to block all the card reader in our environment using the device id and use a wildcard * PCISTOR\ *. 

Just want to know if there wouild be other device/instances that will be affected if we block device PCISTOR\ *