Avago Technologies MegaRAID SAS 9280-24i4e - Manual (Page 8)

Page 8 LSI Corporation Confidential | May 2010
MegaRAID SAS 9280-24i4e RAID Controller Quick Installation Guide Controller Installation
J4A5 LED Locate and Fault Indication
header
Ports 16-19
Ports 20-23
2x8-pin header
Connects to an LED that indicates whether a drive is in a fault condition. There is one LED
per port. When lit, each LED indicates the corresponding drive has failed or is in the
unconfigured-bad state.
The LEDs function in a direct-attach configuration (there are no SAS expanders). Direct
attach is defined as a maximum of one drive connected directly to each port.
NOTE: This header is used for RAID controllers with internal SAS ports only.
J4B2 x4 SAS Ports 12-15 internal
connector SFF-8087 x4 internal mini SAS connector
Connects the controller by cable to SAS drives or SATA 2 drives.
J5A1 x4 SAS Ports 16-19 internal
connector SFF-8087 x4 internal mini SAS connector
Connects the controller by cable to SAS drives or SATA 2 drives.
J5A2 Write pending LED header 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.
J5B2 x4 SAS Ports 20-23 internal
connector SFF-8087 x4 internal mini SAS connector
Connects the controller by cable to SAS drives or SATA 2 drives.
J5B3 Universal Asynchronous
Receiver/Transmitter (UART)
debugging 4-pin connector
Reserved for LSI use.
Table 1: Jumpers and Connectors (Continued)
Jumper/
Connector
Type Description
J4A5
PORT\16
PORT\23
+ve -ve
k a
J5A2
a k
+ve -ve