Avago Technologies MegaRAID SAS 8204ELP - Manual (Page 62)

3-12 MegaRAID SAS RAID Controller Characteristics
Copyright © 2005-2007 by LSI Logic Corporation. All rights reserved.
Table 3.5 SAS 8344ELP RAID Controller – Jumpers and
Connectors
Jumper Description Type Comments
J1 SAS 8344ELP ports Ports 0–3 The ports connect the cables from
the adapter to SAS or SATA II
physical drives, or a port multiplier.
J3 Serial header for
debug use 4-pin
header Used for diagnostic purposes.
Note: The serial port is not RS232
voltage level compliant.
J4 Mode Select header 2-pin
connector
If the firmware flashed onto the
board is corrupted, you need to
place a jumper on J4 (this holds the
CPU core in reset), so you can flash
the firmware. Remove the jumper
after you flash the new firmware.
No jumper: This is the setting during
normal operation (Mode 3). This is
the default.
Jumper: This holds the CPU core in
reset (Mode 0).
Note: The card does not function as
a RAID controller if this jumper
is mounted.
J5 Individual Activity
LED header for all
eight ports 16-pin
(8x2)
header Provides an LED interface
individually to eight SATA II ports.
The LED indicates activity on a
specific port.
J6 System Management
(SM) Bus/I
2
C header
3-pin
header Provides support for enclosure
management.
J7 IPMI-style
LSI1068 SMBUS
System Management
debug header 3-pin
header Used for diagnostic purposes.
J8 Cache Write Pending
LED 2-pin
connector Connector for an enclosure LED.
Provides a signal that indicates
when the on-board cache contains
data and a write from the cache to
the hard drives is pending.
Optional.