When you insert the Codemeter dongle (CmStick), it will look like a USB-Stick: it has a drive letter and it is visible in the Windows explorer.
In the attached document you can find instructions for Switching from MSD to HID
The biggest advantage of the HID interface vs. the MSD interface is that CmSticks no longer appear as memory sticks or thumb drives. In some network environments detachable memory devices are forbidden. Now that a Codemeter Dongle can appear as a simple HID device, this concern has been eliminated.