guide to mount the interface bracket and fix it to the rear connect area of the system as in the right picture. Route the VGA through the cable exit of the base stand to the main unit. Connect the attached power adaptor for its power source.
ROUTING THE CABLES
Place all the cables required for connections to the main unit except those for the integrated attachment through the front part
inside the stand assembly. Be sure not to damage any cable during this operation. The joint of the DB9 RS232 cable of the external devices and the RS232 conversion 
cable if used is most recommended to
be kept inside the base stand assembly.
Route Cables through Front Part
Connect this End to Main Unit
Now, turn the adjustable stand assembly back to normal orientation and arrange all cables to come out of the area for mounting main unit from the bottom edge for ease of later operation.
PREPARING THE MAIN UNIT
On the back of the main unit, there is a service window among the 4 matching pegs. Remove the service window lock screw to find several jumpers. The jumpers in this window are designated for VGA port and COM port power supply function. Please consult your dealer for technical support on setup of these jumpers. Please note that only those qualified
technicians may adjust in the service window with information from Posiflex and the contents in the service window may change without notice as time
develops.Jumpers
Service Window
Lock Screw
SIDE MOUNT UPGRADE KIT
Remove the 2 circled screws in last picture above to remove the cover for side mount upgrade kit. Take out the cable inside this cover as circled in right picture and remove the 2 shorting jumpers inside and then connect it to connector inside the side mount upgrade kit like SD400 as
Part 11