27
Chapter 3 Motherboard Connections
3.2 Headers and Connectors
+12V 4-pin Power
Pin Definitions
Pin#
Definition
1 - 2 Ground
3 - 4 +12V
12V DC Power Connector
The 4-pin (JPV1) connector is used to provide alternative power for a special enclosure when
the 24-pin ATX power is not in use.
4-pin HDD Power
Pin Definitions
Pin#
Definition
1
12V
2-3
GND
4
5V
HDD Power Connector
JPH1 is a 4-pin power connector for HDD use. It provides power from the motherboard to
the onboard HDD.
1
1
4
4
2
3
2
JLANLED3
JLANLED2
4
JLANLED1
JSFPLED1
2
1
JFPCLED1
C
A
LEDT2
LEDT4
A
C
COM1
1
5
PRESS FIT
CG13
CG11
CG7
CG6
CG1
CG2
CG3
CG4
CG5
L20
L19
L1
SFP1
BAR CODE
BIOS LICENSE
DESIGNED IN USA
A2SDV-4C-LN8F
REV:1.01
11
10
6
1
M*
20
19
2
1
JF1
67 57
JMD2
JMD1
1
74
75
12
13
1
JPW1
JPI2C1
JSD1
BT1
SRW2
SRW1
SRW3
SRW4
JUIDB
JPL1
JI2C2
JI2C1
JWD1
JPG1
JPME2
JSEL1
JPL4
JPL3
JPL2
JBR1
DIMMA2
DIMMB2
DIMMA1
DIMMB1
C
A
LEDT1
LEDT3
A
C
JSMB1
JD1
2
1
JGP1
JBT1
JPH1
4
3
2
JPV1
FAN2
FAN1
FANB
FAN3
FANA
1
2
20
JL1
JR
T3
1
1
I-SATA1 I-SATA2 I-SATA3 I-SATA4
I-SATA0
1
4
LEDM1
A
C
UIDLED1
A
AL
W
AYS POPULA
TE DIMMx1 FIRST
LN10PF: LAN1-2
LN10PF: LAN3-10
LN8F: LAN1-8
USB 4 (3.1 Gen 1)
eUSB USB 2/3
USB 0/1
(3.1 Gen 1)
IPMI LAN
CPU
VGA
CPU SLOT7 PCI-E 3.0 X4
NMI
X
CPU SLOT6 PCI-E 3.0 X4
PWR
LED
HDD
LED
NIC
2
NIC
1
OH/FF
RST
X
JF1
ON
PWR
JIPMB1
JTPM1
CM CODE
LED1
JR
T4
BMC
AST2400
2
JLANLED3
JLANLED2
4
JLANLED1
JSFPLED1
2
1
JFPCLED1
C
A
LEDT2
LEDT4
A
C
COM1
1
5
PRESS FIT
CG13
CG11
CG7
CG6
CG1
CG2
CG3
CG4
CG5
L20
L19
L1
SFP1
BAR CODE
BIOS LICENSE
DESIGNED IN USA
A2SDV-4C-LN8F
REV:1.01
11
10
6
1
M*
20
19
2
1
JF1
67 57
JMD2
JMD1
1
74
75
12
13
1
JPW1
JPI2C1
JSD1
BT1
SRW2
SRW1
SRW3
SRW4
JUIDB
JPL1
JI2C2
JI2C1
JWD1
JPG1
JPME2
JSEL1
JPL4
JPL3
JPL2
JBR1
DIMMA2
DIMMB2
DIMMA1
DIMMB1
C
A
LEDT1
LEDT3
A
C
JSMB1
JD1
2
1
JGP1
JBT1
JPH1
4
3
2
JPV1
FAN2
FAN1
FANB
FAN3
FANA
1
2
20
JL1
JR
T3
1
1
I-SATA1 I-SATA2 I-SATA3 I-SATA4
I-SATA0
1
4
LEDM1
A
C
UIDLED1
A
AL
W
AYS POPULA
TE DIMMx1 FIRST
LN10PF: LAN1-2
LN10PF: LAN3-10
LN8F: LAN1-8
USB 4 (3.1 Gen 1)
eUSB USB 2/3
USB 0/1
(3.1 Gen 1)
IPMI LAN
CPU
VGA
CPU SLOT7 PCI-E 3.0 X4
NMI
X
CPU SLOT6 PCI-E 3.0 X4
PWR
LED
HDD
LED
NIC
2
NIC
1
OH/FF
RST
X
JF1
ON
PWR
JIPMB1
JTPM1
CM CODE
LED1
JR
T4
BMC
AST2400
Fan Headers
The A2SDV-8C-LN8F has five 4-pin fan headers (FAN1 ~ FAN3, FANA, FANB). These
headers are backwards-compatible with the traditional 3-pin fans. However, fan speed control
is available for 4-pin fans only by Thermal Management via the IPMI 2.0 interface. Refer to
the table below for pin definitions.
Fan Header
Pin Definitions
Pin#
Definition
1
Ground (Black)
2
2.5A/+12V (Red)
3
Tachometer
4
PWM_Control
Speaker Header
JD1 is the speaker header. Connect the cable of the external speaker to pins 1-4.
Speaker Connector
Pin Definitions
Pin Setting
Definition
Pins 1-4
Speaker
