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NCA-2522 User Manual
The pin headers on the motherboard are often associated with essential functions. With the shunt
(Jumper) pushed down on the designated pins (the pin numbers are printed on the circuit board,
surrounding the pin header), particular features can be enabled or disabled. While changing the jumpers,
make sure your system is completely turned off.
1. BAT1: RTC Battery Connector
Pin No.
Description
1
VCC_BATTERY
2
GND
2. COMB1: Consol Port Header (Pitch 2.0mm)
Pin No.
Description
1
COM_DCD
3
COM_RXD
5
COM_TXD
7
COM_DTR
9
GND
3. CON1 / CON2: SATA Power
Pin No.
Description
1
12V
2
GND
3
GND
4
4. CON3: TTL & PMBUS Header
Pin No.
Description
1
PSU_TTL1
2
PSU_TTL2
3
NC
4
GND
5. JRTC1: Clear CMOS
Pin No.
Description
1
P3V3_RTC
2
SRTCRST_N
3
GND
Pin No.
Description
2
COM_DSR
4
COM_RTS
6
COM_CTS
8
COM_RI
10
NC
5V
Pin No.
5
6
7
PMBUC_DAT
8
Description
NC
PMBUS_CLK
VCC
18
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