Logic MegaRAID SCSI 320-1 RAID Controller User's Guide

Installation Steps 6-5
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
6.2.3.2 J3 Clear EPROM
J3 is a two-pin header that clears the erasable progammable read-only
memory (EPROM) configuration data.
6.2.3.3 J4 BIOS Enable
J4 is a 2-pin header that enables or disables the MegaRAID onboard
BIOS. The onboard BIOS should be enabled (J4 unjumpered) for normal
board position. Table 6.3 shows the jumper settings.
6.2.3.4 J5 SCSI Activity LED
J5 is a two-pin connector that attaches to a cable that connects to the
hard disk LED mounted on the computer enclosure. The LED indicates
data transfers (SCSI bus activity.)
6.2.3.5 J6 Serial Port
J6 is a 3-pin header that attaches to a serial cable. This is used for test
purposes only.
6.2.3.6 J8 Connector for Optional BBU Daughter Card
J8 is 40-pin connector that is used to mount an optional battery backup
unit that is on a daughtercard.
6.2.3.7 J9 SCSI Bus Termination Power
J9 is a 2-pin jumper. The factory setting is pins 1-2 shorted. Leave at the
default setting (jumper installed) for J9 to allow the PCI bus to provide
termination power.
Table 6.3 Pinout for J4 BIOS Enable
J4 Setting Onboard BIOS Status
Unjumpered Enabled
Jumpered Disabled