41
Chapter 4: Motherboard Connections
4.2 Headers and Connectors
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
HDD Power Connector
JPH1 is a 4-pin power connector for HDD use. It provides power from the motherboard to
the onboard HDD.
4-pin HDD Power
Pin Definitions
Pin#
Definition
1
12V
2-3
GND
4
5V
Fan Headers
The A2SDV-16C-TLN5F has six 4-pin fan headers (FAN1 ~ FAN4, 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
Chassis Intrusion
A Chassis Intrusion header is located at JL1 on the motherboard. Attach the appropriate cable
from the chassis to inform you of a chassis intrusion when the chassis is opened. Refer to
the table below for pin definitions.
Chassis Intrusion
Pin Definitions
Pin#
Definition
1
Intrusion Input
2
Ground
