JT1

Dirty Cache LED Header

2-pin connector

For connection to enclosure LED. When lit, indicates the data in the cache has not been written to disk.

JT2

Drive Activity LED Header

2-pin connector

LED signal for drive activity

JT3

Board-to-board Connector for Battery Backup Unit

20-pin connector

Provides an interface to the daughter card that contains the battery backup unit.

JT4

Drive Fault LED Header

2-pin connector

LED signal for any drive fault.

JT6

Internal SAS/SATA Port Connector, Ports 0-3

SFF8087

Connection to SAS/SATA devices.

JT7

Internal SAS/SATA Port Connector, Ports 4-7

SFF8087

Connection to SAS/SATA devices.

JT8

Debug Connector

2-pin connector

Reserved

JT9

Set Factory Defaults Connector

2-pin connector

Resets the board settings to the defaults set in the factory.

JT10

Debug Connector

2-pin connector

Reserved

JT11

Keyed I

3-pin keyed connector

Out-of-band enclosure management (SES2)

JT12

Individual Drive Fault LED header

8 x 2 header

Indicates drive faults. 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 driveconnected directly to each port.

Note: This header is used for RAID controllers with internal SAS ports only.

JT13

Universal Asynchronous Receiver/Transmitter (UART)

4-pin connector

For factory and debug use.