ASROCK X570 Phantom Gaming 4S Manual Del Usuario página 33

Serial Port Header
(9-pin COM1)
(see p.1, No. 25)
2.7 Post Status Checker
Post Status Checker (PSC) diagnoses the computer when users power on the
machine. It emits a red light to indicate whether the CPU, memory, VGA or storage
is dysfunctional. The lights go off if the four mentioned above are functioning
normally.
This COM1 header
RRXD1
DDTR#1
supports a serial port
DDSR#1
CCTS#1
module.
1
RRI#1
RRTS#1
GND
TTXD1
DDCD#1
X570 Phantom Gaming 4S
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