Please download and install the latest release again (2.00.089) from our website. There has recently been a new option added ("No USB Drives") that may allow you to do what you need.
I now have an issue with either the "no usb drives" or "no local drives", once this is set it will not unset, the flash drives of the attached printers remain hidden. Any experience with this ??
and regarding the "new version" : it's size is 8905k versus the previous "new version" which is 9140k but they both have the same build nummer (12.0.0.53157)....