User’s Manual
Table Of Contents
ASUS PRIME B650-PLUS
1-5
14. COM Port header
This header is for a serial (COM) port. Connect the serial port module cable
to this header, then install the module to a slot opening at the back of the
system chassis.
15. 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-denition front panel
audio module to this header to avail of the motherboard’s high-
denition audio capability.
• If you want to connect a high-denition 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].
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
certicates, passwords, and data. A TPM system also helps enhance
network security, protects digital identities, and ensures platform integrity.
The TPM module is purchased separately.
17. System Panel header
This header supports several chassis-mounted functions.
• System Power LED header (PLED)
The 2-pin and/or 3-1 pin headers allow you to connect the
System Power LED. The System Power LED lights up when
the system is connected to a power source, or when you
turn on the system power, and blinks when the system is in
sleep mode.
• Storage Device Activity LED header (HDD_LED)
The 2-pin header allows you to connect the Storage Device Activity LED. The Storage
Device Activity LED lights up or blinks when data is read from or written to the storage
device or storage device add-on card.
• System Warning Speaker header (SPEAKER)
The 4-pin header allows you to connect the chassis-mounted system warning speaker.
The speaker allows you to hear system beeps and warnings.
• Power Button/Soft-off Button header (PWRSW)
PIN 1
COM
DCD
TXD
GND
RTS
RI
RXD
DTR
DSR
CTS
PORT1L
PORT1R
PORT2R
SENSE_SEND
PORT2L
AGND
NC
SENSE1_RETUR
SENSE2_RETUR
AAFP
PIN 1
HD-audio-compliant
pin definition
TPM
PIN 1
F_SPI_HOLD#_R
T_SPI_MISO
F_SPI_CS0#_R
F_SPI_PWR
NC
H_PCIE_RST#
VCCSPI
T_SPI_MOSI
T_SPI_CLK
GND
TPM_DETECT_L
S_SPI_TPM_CS2#
S_SPI_TPM_IRQ#