Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 37)

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Figure 2-16, ARC-1883i LED
Indicator Connector
Figure 2-18, ARC-1883x LED
Indicator Connector
Figure 2-17, ARC-1883LP LED
Indicator Connector