Chapter 2: Installation
2-13
24Pin PW1
S M B
P W
A l a r m
R e s e t
DIMM1
DIMM2
DIMM5
P W R
Fault
F
a
24-Pin PW2
IDE1
IDE2
Fan6
Fan5
F
a
Debug Codes LED
24Pin PW1
1
5
2
6
CO
M
1
3
3
7
7
4
4
8
8
LAN1
LAN
2
VGA
S C S I B
U S B 2 / 3
C H
IPMI
S M B
C P U 1
CPU2
F
a
n
2
24-Pin
P
W2
24
Pin PW2
IDE1
IDE2
Fan6
Fan5
5
Fan6
Fan1
S M B
P W
A l a r m
R e s e t
DIMM1
DIMM2
DIMM5
DIMM6
DIMM3
DIMM7
DIMM4
DIMM8
MRH-D
MRH-D
MRH-D
MRH-D
PCI-X
SCSI A
L S I
S C S I
Controller
P 6 4 H
ICH4
SIOH
S N C
VRM-top
VRM-top
FP C T L R
R
US
B
0/1
Fan7
GLAN
C T L R
Fan8
S I/O
S
Fa
n
4
Fan4
Fan3
3
3
P W R
Fault
COM2
6
2
5
DIMM5
1
EPS 12V Power Supply 24-pin Connectors:
J20,J36--Pin Definitions
Pin Number Definition
13
+3.3V
14
-12V
15
COM
16
PS_ON#
17
COM
18
COM
19
COM
20
Res(NC)
21
+5V
22
+5V
23
+5V
24
COM
Pin Number Definition
1 +3.3V
2 +3.3V
3 COM
4 +5V
5 COM
6 +5V
7 COM
8 PWR_OK
9
5VSB
10
+12V
11
+12V
12
+3.3V
2-5
Connecting Cables
Processor Power
Connectors
(*For CPU
VRMs)
I n a d d i t i o n t o t h e p r i m a r y S S I
EPS12V 24-pin power connectors
(above), there are also two 4-pin
EPS 12V/15A VRM power connec-
t o r s t o b e c o n n e c t e d t o C P U
Power Pods (VRMs). Refer to the
table on the right for pin defini-
tions.
EPS 12V Power Supply 4-pin Connectors:
Pin Definitions
Pin
Number Definition
2 Ground
4 +12V
Pin
Number Definition
1 Thru
3 Thru
EPS 12V Power
Connectors (Main PS)
There are two 24-pin main power
supply connectors (PW1, PW2) on
the board. These power connec-
tors meet the SSI EPS 12V specifi-
cation. (*Only one 24-pin connec-
tor is needed.) See the tables on
the right for pin definitions.
PW1 (24-Pin PWR
Connector)
PW2 (24-Pin PWR
Connector)
CPU VRMs