Specifications
Chapter 3: Setting Up D-Control 31
Moving the Keyboard and Trackball 
(Optional)
You can move the trackball on the D-Control Main Unit to the 
left of the computer keyboard. 
To move the keyboard and trackball:
1 Using a 5/64-inch hex wrench, remove the screws in the 
computer keyboard panel and the trackball panel on the 
D-Control Main Unit.
2 Exchange the position of the trackball and keyboard panels, 
and carefully rearrange their cables underneath the panels.
3 Reattach the computer keyboard and trackball panels to the 
Main Unit.
Replacing the Trackball with an 
External Trackball or Mouse (Optional)
If you prefer to work with your own trackball or mouse, you 
can remove the D-Control trackball from the D-Control Main 
Unit and replace it with the provided blank plate, and place 
your USB-compatible trackball or mouse on top of the blank 
plate.
To remove the trackball:
1 Using a 5/64-inch hex wrench, remove the trackball plate 
on the D-Control Main Unit.
2 Disconnect the Molex plug from the P1 connector on the 
printed circuit board on the bottom of the trackball plate.
3 Disconnect the Molex plug that comes from under the 
D-Control keyboard from the trackball assembly. 
4 Remove the screws holding the printed circuit board to the 
trackball plate. Set the D-Control trackball plate aside.
5 Locate the blank plate and install the printed circuit board 
on the underside of the blank plate.
6 Locate the USB connector on the printed circuit board, and 
connect your trackball or mouse to it.
7 Connect the Molex plug you disconnected in Step 3 to the 
P2 connector on the printed circuit board. Make sure you fit 
the connector and plug together correctly (so that the plug 
snaps into place) to maintain polarity of this connection. 
8 Route the cable of your trackball or mouse through the slot 
in the blank plate. 
9 Attach the blank plate to the Main Unit.
Reinstalling the Trackball
If you need to reinstall the factory trackball on a D-Control 
Main Unit, carry out the following procedure.
To replace the trackball:
1 Using a 5/64-inch hex wrench, remove the blank plate from 
the Main Unit.
2 Disconnect the Molex plug from the P2 connector on the 
printed circuit board. 
3 Disconnect the external trackball or mouse from the USB 
connector on the printed circuit board.
4 Remove the screws holding the printed circuit board to the 
bottom of the blank plate. Set the blank plate aside.
5 Locate the D-Control trackball plate and install the printed 
circuit board on the underside of the trackball plate.
6 Connect the Molex plug that runs from the D-Control track-
ball assembly to the P1 connector on the printed circuit board. 
Make sure you fit the connector and plug together correctly 
(so that the plug snaps into place) to maintain polarity of this 
connection.
7 Connect the Molex cable that comes from under the D-Con-
trol keyboard to the connector on the D-Control trackball as-
sembly. 
8 Reattach the trackball plate to the Main Unit. 
Figure 47. Trackball located on left side of keyboard on the Main Unit










