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B840MT-E | A620MS-E
COM: Serial Port Connector
The motherboard has a serial port header for connecting RS-232 Port.
Pin
Assignment
1
Carrier detect
2
Received data
3
Transmitted data
4
Data terminal ready
5
Signal ground
6
Data set ready
7
Request to send
8
Clear to send
9
Ring indicator
10
Key
TPM_SPI: Trusted Platform Module Header
This header allows you to store cryptographic keys that protect information.
14
13
2
1
TPM_SPI
Pin
Assignment
Pin
Assignment
1
+1.8V
2
SPI_PIRQ
3
TPM_RST#
4
TPM_CS
5
N/A
6
N/A
7
+1.8V
8
GND
9
N/A
10
SPI_CLK
11
SPI_MISO
12
SPI_MOSI
13
N/A
14
KEY
Chapter 2: Hardware installation | 25