Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 34)

HARDWARE INSTALLATION
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Figure 2-12, SFF-8643 to 4xSFF-8482 Cable
Figure 2-13, Mini SAS HD SFF-8643 Cable
2.4.3 Mini SAS HD SFF-8643 Cable
The 12Gb/s SAS RAID controllers have 1-6 Mini SAS HD SFF-8643
connectors, each of them can support up to four SAS/SATA sig-
nals. These controllers can be installed in a server RAID enclosure
with Mini SAS HD SFF-8643 internal connectors backplane. This
Mini SAS HD cable has eight signal pins to support four SAS/SATA
drives and six pins for the SGPIO (Serial General Purpose Input/
Output) side-band signals. The SGPIO bus is used for efficient
LED management and sensing drive Locate status.
2.4.2 Mini SAS HD SFF-8643 to 4xSFF-8482 Cable
These controllers can be installed in a server RAID enclosure with
out a backplane. The kind of cable will attach directly to the SAS
disk drives. The following diagram shows the picture of Mini SAS
HD SFF-8643 to 4xSFF-8482 cables.