( 2 ) External Appearance
[ a ] LIO-01 Module
LED indicators
LIO-01
Switch
LD1
LD2
LD3
LD4
MODE
I/O connector
LD5
LD6
LD7
LD8
I/O
[ b ] LIO-02 Module
LED indicators
Switch
I/O connector
3.4 I/O Modules (Optional)
LIO-02
LD1
LD5
LD2
LD6
LD3
LD7
LD4
LD8
MODE
I/O
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