ASROCK B550AM Gaming User Manual page 38

ATX Power Connector
(24-pin ATXPWR1)
(see p.7, No. 7)
ATX 12V Power
Connector
(8-pin ATX12V1)
(see p.7, No. 1)
Serial Port Header
(9-pin COM1)
(see p.7, No. 21)
SPI TPM Header
(13-pin SPI_TPM_J1)
(see p.7, No. 15)
32
12 24
1 13
8 5
4 1
RRXD1
DDTR#1
DDSR#1
CCTS#1
1
RRI#1
RRTS#1
GND
TTXD1
DDCD#1
SPI_DQ3
+3.3V
Dummy
CLK
SPI_MOSI
RST#
TPM_PIRQ
1
SPI_TPM_CS#
GND
RSMRST#
SPI_MISO
SPI_CS0
SPI_DQ2
This motherboard pro-
vides a 24-pin ATX power
connector. To use a 20-pin
ATX power supply, please
plug it along Pin 1 and Pin
13.
This motherboard
provides two 8-pin ATX
12V power connectors. To
use a 4-pin ATX power
supply, please plug it along
Pin 1 and Pin 5.
*Warning: Please make
sure that the power cable
connected is for the CPU
and not the graphics
card. Do not plug the
PCIe power cable to this
connector.
This COM1 header
supports a serial port
module.
This connector supports SPI
Trusted Platform Module (TPM)
system, which can securely store
keys, digital certificates, pass-
words, and data. A TPM system
also helps enhance network
security, protects digital
identities, and ensures platform
integrity.