Leds - Biostar B560MH-E 2.0 Manual

COM1: Serial Port Header
The motherboard has a serial port header for connecting RS-232 Port.

2.8 LEDs

Debug LED: Debug LED Indicators
This LEDs indicate the status of the motherboard.
Note
» After starting the computer, the LED indicators will light up in the following order:
CPU → DRAM → VGA → BOOT
» When the computer is ready, the LED indicator will show where the error occurred and will stay on
until the problem is solved.
» After the computer is started, the Debug LED will not light up if there is no abnormality detected.
18 | Chapter 2: Hardware installation
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
CPU - indicates CPU is not detected or fail.
DRAM - indicates DRAM is not detected or fail.
VGA - indicates GPU is not detected or fail.
BOOT - indicates booting device is not detected
or fail.