If using Windows 7, after right-clicking the Start button, right-click on ‘Computer’ (In Windows XP, right-click on ‘My Computer’).
If using keyboard shortcuts, press the letter ‘M’. Select Device Manager from the menu by left-clicking with the mouse.Alternately, press the keyboard shortcut: + X. Access the Power Users Menu by right-clicking the Windows icon (or Start button) in the lower left corner of the screen.Locate the USB Serial COM Port in Windows Device Manager Keep the USB to serial adapter connected to the USB port.To gain control of the mouse, first make sure that the attached NMEA data source (e.g., GPS, AIS, Sonar) is either powered off or unplugged from the serial port on the USB serial adapter.These instructions were tested in Windows 10 and can be adapted for Windows 8, 7 or XP operating systems. The following steps will cure the “crazy mouse” syndrome with Sealevel USB to serial adapters. It is caused when the NMEA 0183 GPS serial data is misinterpreted as mouse data by the serial port enumerator (serenum.sys), resulting in erratic mouse cursor activity. This condition is potentially encountered in Microsoft Windows when connecting a serial GPS device to a serial port.
