LSI MegaRAID(R) 6 Gb/s SAS RAID Controllers 25083 User Manual

 

 shows the jumpers and connectors on the SAS 9280-4i/4e 

controller.

J1B1

x4 SAS Ports 0–3

SFF-8088 x4 external mini SAS 
connector

Connects the cables from the controller 
to SAS drives or SATA II drives, or a SAS 
expander.

J6A1

Global Drive Fault LED 
header

2-pin connector

Connects to an LED that indicates 
whether a drive is in a fault condition.

J6A2

SAS Activity LED header 2-pin connector

Connects to an LED that indicates drive 
activity.

J6A3

Write-pending Indicator 
(dirty cache) LED 
connector

2-pin connector

Connects to an LED that indicates when 
the data in the cache has yet to be 
written to the storage devices. Used 
when the write-back feature is enabled.

J6B1

Remote Battery Backup 
Unit connector

20-pin connector

Connects the intelligent Battery Backup 
Unit, LSIiBBU07, remotely to the RAID 
controller.

J6B2

Battery Backup Unit 
connector

20-pin connector

Connects the intelligent Battery Backup 
Unit, LSIiBBU07, directly to the RAID 
controller.