Since this port has no association to a ZebraDesigner driver it does not know how to communicate with the Zebra printer. The “Unspecified” driver that the Windows OS associates the Zebra printer with is a USB port that it automatically chooses. However, the OS forces an association to occur even when it does not find the driver from the printer manufacturer. If a printer is connected via USB before the ZebraDesigner driver is installed just once, the Microsoft operating system creates an “Unspecified” or 'Unknown printer in Devices and Printers.
This allows the operating system, when a USB printer is connected, to associate a printer to a driver automatically. Microsoft chose to further “enhance” plug and play with Windows 7 and above. Unspecified or Unknown Device Error Not Communicating with Windows 7 or above
