LSI MegaRAID SCSI 320-2 RAID Controller Series 518 - Manual (Page 78)

6-6 Hardware Installation
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
Figure 6.2 MegaRAID SCSI 320-2 Controller Layout
6.2.4.1 J2 SCSI Activity LED
J2 is a four-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.)
6.2.4.2 J3 Dirty Cache LED
J3 is a two-pin header for the dirty cache LED. This can be connected
to an LED on the computer enclosure. The LED will be lit when data in
the cache has not yet been written to the storage device.
6.2.4.3 J4/J5 Termination Enable
J4 and J5 are three-pin headers that specify the type of SCSI termination
for channel 0 and channel 1, respectively.
Table 6.3 shows the jumper
J4
External
Very-High
Density
SCSI
Connectors
J5
J17
J16
J10
J2
J3
Internal High-Density
SCSI Connectors
DIMM Socket
J18
Channel 0 Channel 1
Channel 0
Channel 1