ASROCK B550 PRO4 - Serial Port and TPM Header

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B550M Pro4
ATX 12V Power
Connector
(8-pin ATX12V1)
(see p.1, No. 1)
is motherboard
provides an 8-pin ATX
12V power connector. 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.
Serial Port Header
(9-pin COM1)
(see p.1, No. 27)
is COM1 header
supports a serial port
module.
SPI TPM Header
(13-pin SPI_TPM_J1)
(see p.1, No. 21)
is connector supports SPI
Trusted Platform Module (TPM)
system, which can securely store
keys, digital certicates, pass-
words, and data. A TPM system
also helps enhance network
security, protects digital
identities, and ensures platform
integrity.
1
SPI_DQ3
+3.3V
SPI_DQ2
SPI_CS0
Dummy
CLK
SPI_MISO
SPI_MOSI
GND
SPI_TPM_CS
#
RST#
RSMRST#
TPM_PIRQ
4
1
8 5
CCTS#1
RRTS#1
DDSR#1
DDTR#1
RRXD1
GND
TTXD1
DDCD#1
1
RRI#1