ASROCK Vig103M Manual page 24

Chassis intrusion connector (4-1 pin JCI1)
This connector is for a chassis intrusion switch cable. Connect one end of the chassis intrusion switch
cable to this connector. The chassis intrusion sensor or switch sends a high-level signal to this connector
when a chassis component is removed or replaced. The signal is then generated as a chassis intrusion
event. By default, both pins do not have JCI1 connector connected.
Figure 13: Chassis intrusion connector
CPU and System fan connectors (4-pin CPUFAN1, 4-pin SYSFAN1)
Connect the fan cables to the fan connectors on the motherboard, ensuring that the black wire of each
cable matches the ground pin of the connector.
Figure 14: CPU and chassis fan connectors
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V1.0 Vig103M Motherboard Manual