Opening And Closing The Chassis; Figure 7: Descrewing The Bottom Access Cover - Kontron KBox F-420-WLU User Manual

5.1. Opening and Closing the Chassis

The KBox F-420-WLU is factory configured to meet customer requirements. Kontron
does not recommend opening the system as this may cause damage to internal
components.
Before opening the KBox F-420-WLU, the system must be switched off and disconnected
from the main power supply. Also, disconnect all peripheral devices from the KBox F-
420-WLU. Before you begin, ensure that you have a clean, flat and ESD-safe surface to
work on.
For opening and closing the KBox F-420-WLU, please perform the following steps:
1. Close all applications. Shut down the system properly and disconnect the connection to the main power source.
Disconnect all peripherals.
To access DDR4 SO-DIMM and M.2 Key M slots / sockets
2. The KBox F-420-WLU should lay on a flat, clean surface with the bottom access cover facing upwards.
3. Loosen and remove the Phillips screws (two located on the bottom access cover), that secure the bottom access
cover to the chassis. Retain the screws for later use.

Figure 7: Descrewing the bottom access cover

4. Lift the bottom access cover up.
5. Now you have access to the internal DDR4 SO-DIMM and M.2 Key M slots / sockets in order to remove or install
the hardware component.
6. For closing replace carefully the bottom access cover to the system and screw it on with the retained screws.
7. Tighten the retained screws when the cover is firmly in place.
To access M.2 Key B, M.2 Key E and Micro SIM card slots / sockets
8. The KBox F-420-WLU should lay on a flat, clean surface with the top side facing upwards.
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KBox F-420-WLU - User Guide, Rev. 1.0
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