Chapter 2: Installation
2-17
7
4
8
LAN1
DIMM7
DIMM4
DIMM8
MRH-D
PCI
USB0/1
Power Button
The Power Button connection is
located on pins 1 and 2 of U66.
Momentarily contacting both pins
will power on/off the system. This
button can also be configured to
f u n c t i o n a s a s u s p e n d b u t t o n
(with a setting in BIOS - see Chap-
t e r 4 ) . T o t u r n o f f t h e p o w e r
when set to suspend mode, de-
press the button for at least 4
seconds. Refer to the table on the
right for pin definitions.
Pin
Number
1
2
Definition
PW_ON
Ground
Power Button
Connector
Pin Definitions
(U66)
Universal Serial Bus
(USB0/1)
Four USB 2.0 ports:USB0/1(J1)
are located on the back panel.
USB0 is the bottom connector and
USB1 is the top connector of J1.
See the table on the right for pin
definitions.
Universal Serial Bus Pin Definitions
Pin
Number
Definition
1
+5V
2
P0-
3
P0+
4
Ground
5
N/A
Pin
Number
Definition
1
+5V
2
P0-
3
P0+
4
Ground
5
Key
USB 0/1(J1)
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
PW2
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
Power Button
Overheat LED
1
NIC1 LED
Reset Button
2
Power Fail LED
HDD LED
Power LED
Reset
Pwr
Vcc
Vcc
Vcc
Vcc
Ground
Ground
19
20
Vcc
X
Ground
NMI
X
X
NIC2 LED
USB 0/1
PWR On Button
