Location of the external LCD diagnostics handset
Location  Callouts
The external LCD diagnostics handset is connected to the 
server with an external cable.
1  External LCD diagnostics handset 
2  Magnetic bottom  
With this component, the diagnostic handset can be 
attached to the top or side of the rack or chassis with 
hands spared for service tasks.
3  External diagnostics connector  
This connector is located on the rear of the server, and is 
used to connect an external LCD diagnostics handset.
Note: When unplugging the external handset, see the following instructions: 
Press the plastic clip on the plug forward.
Hold the clip and remove the cable from the connector.
Display panel overview
The diagnostics device consists of an LCD display and 5 navigation buttons.  
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ThinkSystem ST650 V2 Maintenance Manual