User's Manual

1.10.2 Internal connectors
1. Power, CPU and chassis fan connectors (3-pin PWR_FAN, 4-pin CPU_FAN, and
4-pin CHA_FAN)
Connect the fan cables to the fan connectors on the motherboard, ensuring that the
black wire of each cable matches the ground pin of the connector.
• The CPU_FAN connector supports a CPU fan of maximum 2A (24 W) fan power.
• Only the CPU_FAN and CHA_FAN1 connectors support the ASUS Fan Xpert feature.
• If you install two VGA cards, we recommend that you plug the rear chassis fan cable to
the motherboard connector labeled CHA_FAN1 for better thermal environment.
DO NOT forget to connect the fan cables to the fan connectors. Insufcient air ow inside
the system may damage the motherboard components. These are not jumpers! DO NOT
place jumper caps on the fan connectors.
2. TPM connector (20-1 pin TPM)
This connector supports a Trusted Platform Module (TPM) system, which can securely
store keys, digital certicates, passwords, and data. A TPM system also helps enhance
network security, protects digital identities, and ensures platform integrity.
The TPM module is purchased separately!
F1A55-M
F1A55-M Fan connectors
CPU_FAN
CPU FAN PWM
CPU FAN IN
CPU FAN PWR
GND
CHA_FAN1
GND
CHA FAN PWR
CHA FAN IN
CHA FAN PWM
GND
+12V
Rotation
PWR_FAN
F1A55-M
F1A55-M TPM connector
TPM
PIN 1
3.3V AD0 PWRDW# NC PCICLK FRAME# PCIRST# AD3
GND
3.3VSB
AD1 AD2
SERIRQ#
CLKRUN#
GND
NC
GND
NC NC
Chapter 1: Product introduction1-20