ASUS TUF GAMING B550-PLUS
1-5
14. Front panel audio header
This header is for a chassis-mounted front panel audio I/O module that
supports HD audio standard. Connect one end of the front panel audio
I/O module cable to this header.
•
We recommend that you connect a high-definition front panel
audio module to this header to avail of the motherboard’s high-
definition audio capability.
•
If you want to connect a high-definition front panel audio
module to this header, set the Front Panel Type item in the
BIOS setup to [HD Audio]. By default, this header is set to [HD
Audio].
15. M.2 slot (Key E)
This socket allows you to install an M.2 (WIFI) module.
16. SPI TPM header
This header supports a Trusted Platform Module (TPM) system with a
Serial Peripheral Interface (SPI), allowing you to securely store keys, digital
certificates, passwords, and data. A TPM system also helps enhance
network security, protects digital identities, and ensures platform integrity.
17. 20-3 pin System Panel header
This header supports several chassis-mounted functions.
•
System power LED (2-pin +PWR_LED-)
This 2-pin header is for the system power LED. Connect the
chassis power LED cable to this header. The system power
LED lights up when you turn on the system power, and blinks
when the system is in sleep mode.
•
Hard disk drive activity LED (2-pin +HDD_LED-)
This 2-pin header is for the HDD Activity LED. Connect the HDD Activity LED cable to
this header. The HDD LED lights up or flashes when data is read from or written to the
HDD.
•
System warning speaker (4-pin SPEAKER)
This 4-pin header is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
•
ATX power button/soft-off button (2-pin PWR_SW)
This header is for the system power button. Pressing the power button turns the
system on or puts the system in sleep or soft-off mode depending on the operating
system settings. Pressing the power switch for more than four seconds while the
system is ON turns the system OFF.
•
Reset button (2-pin RESET)
This 2-pin header is for the chassis-mounted reset button for system reboot without
turning off the system power.
PLED+ PLED- PWR Ground
+5V Ground Ground Speaker CASEOPEN
HDD_LED-
GND Reset +5V
PLED+
PLED-
GND
PIN 1
+PWR_LED-
+PWR_LED-
SPEAKER
PANEL
+HDD_LED-
PWR_SW
RESET
* Requires an ATX power supply
CHASSIS
AAFP
AGND NC SENSE1_RETUR
SENSE2_RETUR
PORT1 L PORT1 R PORT2 R
SENSE_SEND
PORT2 L
HD-audio-compliant
pin definition
TPM
PIN 1
T_SPI_MOSI T_SPI_CLK
GND
F_BIOS_WP#_R
S_SPI_TPM_CS2# S_SPI_TPM_IRQ#
F_SPI_HOLD#_R T_SPI_MISO F_SPI_CS0#_R +3V_SPI F2_SPI_CS1#_R S_PLTRST# VCCSPI
