Chapter 2: Installation
2-19
3
2
1
1
DESIGNED IN USA
A1SRM-LN7F/LN5F
REV:1.01
BIOS
LICENSE
BAR CODE
T21
J3
SRW1
SRW2
SRW3
SRW4
JF3
JPW2
JF2
FAN2
FAN1
FAN3
I-SA
TA
1
I-SA
TA
2
I-SA
TA
0
I-SATA3
I-SATA5
I-SATA4
JD1
COM2
JUIDB1
VGA
JIP
MB1
JTPM1
JSD1
JWD1
JI2C2
JI2C1
JPG1
JBAT1
SP1
LED3
LED8
LED7
LED2
JPW1
JF1
JL1
JOH1
JPI2C1
JSTBY1
T11 T9
T7
T5
T24
T23
T22
T18
T20
T1
T16
T17
T14
T15 T13
T12 T10
J4
T19
T4
T6
T2
T3
T8
LAN
BY
PA
SS LE
D
M_SATA
USB 2.0-4/5
COM1
USB2.0 6/7
LAN5 USB2.0 2/3
USB 2.0-1
LAN6/LAN7
PCI-E 2.0X4
JBT1
LAN 1/2/3/4/5 LED
LAN3/LAN4
DOM POWER
SATA
LAN1/LAN2
DIMMA
2
DIMMA
1
CPU
DIMMB
1
DIMMB
2
JPCIE1
2-6 Connecting Cables
This section provides brief descriptions and pin-out definitions for onboard headers
and connectors. Be sure to use the correct cable for each header or connector.
A. 24-Pin ATX Power
B. 12V DC Power
C. 4-Pin HDD Power
ATX Power 24-pin Connector
Pin Definitions (JPW1)
Pin# Definition Pin # Definition
13
+3.3V
1
+3.3V
14
NC
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
NC
8
PWR_OK
21
+5V
9
5VSB
22
+5V
10
+12V
23
+5V
11
+12V
24
COM
12
+3.3V
A
B
ATX PWR, DC PWR and HDD PWR
Connectors (JPW1, JPW2, J4)
The 24-pin ATX power connector header
(JPW1) is used to provide power to the
motherboard. JPW2 is the 12V DC power
connector that provides alternative power
for special enclosure when the 24-pin
ATX power is not in use. The 4-pin HDD
power connector J4 provides power to
onboard HDD devices.
C
1
4
2
3
1
4
12V DC Power
Pin Definitions (JPW2)
Pin# Definition
1-2
GND
3-4
12V
4-Pin HDD Power
Pin Definitions (J4)
Pin# Definition
1
12V
2-3
GND
4
5V
