Siemens SIMATIC Rack PC 840 Manual page 23

3 Front Door
The Front ports and the screw to unlock the housing cover are protected against
dirt and unauthorized access by means of a door. Please keep the front door
closed during normal operation. The Microsoft Windows Product Key is located on
the inside of the front door.
Caution
Only qualified personnel is authorized to open the Rack PC or carry out repairs or
maintenance work.
4 Lock
To prevent unauthorized access you can lock the front door.
SIMATIC Rack PC 840 Manual
A5E00104826-03
Welcome to the SIMATIC Rack PC 840
2-3