|Data type||Range||Default value|
|REG_DWORD||0 | 1||1|
Determines whether there is one or more than one port device object for each class device object. This entry is used primarily by device drivers.
|0||1:1. Indicates that the class device object created by the driver is connected to one port device object.|
|1||1:Many. Indicates that the class device object created by the driver is connected to multiple port device objects. As a result, the events generated by all pointing devices on the system are fed to the Windows subsystem in a single input stream.|