Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 22)

HARDWARE INSTALLATION
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LED Status
Link LED
(Green light)
When the link LED is lit that indicates the link LED is connected.
Activity LED
(Blue light)
The activity LED is lit that indicates the adapter is active.
The following table describes the ARC-1883ix external port Mini
SAS HD SFF-8644 link/activity LED behavior.
Figure 2-4, ARC-1883x Top View
Connector Type Description
1. (J1) Manufacture Purpose Port 12-pin header
2. (J2) Flash-based/Battery Backup Module Connector 14-pin box header
3. (J3) I 2 C/LCD Connector 7-pin header
4. (J4) Ethernet Port RJ45
5. (SCN1) Mini SAS HD 1-4 Ports (External) SFF-8644
6. (SCN2) Mini SAS HD 5-8 Ports (External) SFF-8644
Table 2-4, ARC-1883x Connectors