NEC Express5800 User Manual page 309

IMPORTANT:
To connect the SAS hard disk drives, you need an optional RAID
controller and a cable dedicated to it.
Up to three SAS hard disk drives can be installed.
The SAS hard disk drive cannot be installed together with SATA
hard disk drive.
RAID LED cable
To let the DISK Access lamp on the front panel indicate the access
states of the hard disk drives connected to the RAID controller,
connect the LED cable provided with the server to the LED
connector on the mother board and the optional RAID controller.
Mother board
RAID controller N8103-116/117A
Internal Cabling Diagrams 10-5
To mother board
To optional RAID
controller
LED
LED cable
connector
Red
Black
RAID controller N8103-109