User Manual

2-9
Chapter 2: Motherboard information
5. COM/P80 selection jumper (3-pin COM_P80_SEL)
Pins
1-2 (Default) SOUTC_FUNCTION
2-3 P80_FUNCTION
21
2 3
SOUTC_FUNCTION
(Default)
P80_FUNCTION
COM_P80_SEL
Connector type
HEADER 1x3p, 2.54mm pitch, S/T
6. LVDS Panel Enable Signal selection jumper (3-pin BKLTEN_SEL)
You can use this jumper to select the EN signal of the LVDS screen as HIGH
enable or LOW enable.
Pins
1-2 (Default) High Active
2-3 Low Active
21 2 3
High Active
(Default)
Low Active
BKLTEN_SEL
Connector type HEADER 1x3p, 2.54mm pitch, S/T
You can use this jumper to enable the TX signal of COM3 port or connect it
to COM_DEBUG header. By default (pin 1 & 2, SOUTC_FUNCTION), the
TX signal of COM3 port is enabled and can function normally. When pin 2
and pin 3 are shorted with the jumper cap, the TX signal is connected to
COM_DEBUG header, and the COM3 port fails to work.