Chapter 2: Installation
2-23
A
1
USB2/3
COM2
USB7
USB5/6
USB4
JBT1
Slot 4 PCI 33MHz
Slot 5 PCI-E x4 in x8
Speaker
Slot 6 PCI 33MHz
IDE
I-S
A
T
A
0
I-S
A
T
A
1
Slot 7 PCI-E x16
I-S
A
T
A
3
I-S
A
T
A
2
L
A
N2
L
A
N1
VG
A
COM1
UNB NON-ECC DDR2 400/533/667 Required
DIMM1A
DIMM1B
USB0/1
/CPU Fan
JPW1
JPW2
KB/MOUSE
Intel 945GC
Intel ICH7R
Battery
BIOS
Super IO
LAN
CTRL
LAN
CTRL
VRM
CTRL
Intel
CPU
LE1
JF1
FP
CTRL
JD1
Fan1
PWR LED/SPKR
JOH1
Fan2
JWD
Fan3
JL1
Fan4
JPL1
JPL2
Fan5
JP3
Clock chip
X7SLM-L
2-6 Connecting Cables
This section provides brief descriptions and pin-out defi nitions for onboard headers
and connectors. Be sure to use the correct cable for each header or connector.
• For information on FP USB (USB 2, 3~4), please see Page 2-9.
• For information on COM Port 1 and COM Port 2, please see Page 2-10.
A. 24-Pin ATX Main PWR
B. 8-Pin Auxiliary PWR
A
B
8-Pin Auxiliary Power Connector
In addition to the ATX main power, the
8-pin 12V power connector located
at JPW2 is also required to provide
power to the South Bridge, North
Bridge and all VRMs. See the table
on the right for pin defi nitions.
ATX Power 24-pin Connector
Pin Defi nitions (JPW1)
Pin# Defi nition Pin # Defi nition
13
+3.3V
1
+3.3V
14
-12V
2
+3.3V
15
COM
3
COM
16
PS_ON
4
+5V
17
COM
5
COM
18
COM
6
+5V
19
COM
7
COM
20
Res (NC)
8
PWR_OK
21
+5V
9
5VSB
22
+5V
10
+12V
23
+5V
11
+12V
24
COM
12
+3.3V
(Required)
12V 8-pin Power Connec-
tor Pin Defi nitions
Pins Defi nition
1 through 4
Ground
5 through 8
+12V
(Required)
ATX Main PWR & CPU
PWR Connectors
The 24-pin main power connector
(JPW1) is used to provide power to
the motherboard. The 8-pin Auxil-
iary PWR connector (JPW2) is also
required for the processors. These
power connectors meet the SSI EPS
12V specifi cation. See the table on
the right for pin defi nitions of these
connectors.
