Advantech PCM-3362 2.11 Buzzer Connector (CN13), 2.12 SATA Connector (CN15), 2.13 COM port connector (CN16 & CN17), 2.14 Giga LAN Connector (CN18), 2.15 Keyboard and PS/2 mouse connector (CN20)

PCM-3362 User Manual 14
Reset (Pin3 & Pin4)
If you install a reset switch, it should be an open single pole switch.
Momentarily pressing the switch will activate a reset.
POWER LED (Pin5 & Pin6)
POWER LED indicator would light when the power is on.
HDD LED (Pin7 & Pin8)
The HDD LED indicator for hard disk access is an active low signal.
2.11 Buzzer Connector (CN13)
PCM-3362 provides one buzzer connector to connect buzzer for alert function.
Buzzer, Advantech’s P/N:1750005282, can be selected to install on board.
2.12 SATA Connector (CN15)
In addition to on board 2GB flash, PCM-3362 features one high performance serial
ATA interfaces (up to 300 MB/s) that eases cabling to hard drives with thin and long
cables while your application need more large storage capacity.
2.13 COM port connector (CN16 & CN17)
The board provides three serial ports: two serial RS-232 ports in one 20 pin connec-
tor (CN16:COM1/2), and one serial port RS422/485 in 4 pin connector(CN17:
COM3).
It provides connections for serial devices or a communication network. You can find
the pin assignments for the COM port connector in Appendix.
2.13.1 Serial Port RS-422/485 (CN17)
COM3 (CN17) can be configured to operate in RS-422 or RS-485 mode by JP3.
2.14 Giga LAN Connector (CN18)
PCM-3362 uses the Intel? 82567V Gigabit LAN chips are linked to dedicated PCIe x1
lanes. PCM-3362 provide high throughputs for heavy loading networking environ-
ment. LAN connections are made via two internal 10-pin box header.
2.14.1 LAN LED Connector (CN19)
PCM-3362 provides an external LAN LED Pin header for connecting to the front side
of the chassis. With this convenient design users may know whether the LAN port is
acting or not easily. Refer to Appendix for detailed information on the pin assign-
ments.
2.15 Keyboard and PS/2 mouse connector (CN20)
The board provides a keyboard connector that supports both a keyboard and a PS/2
style mouse. In most cases, especially in embedded applications, a keyboard is not
used. If the keyboard is not present, the standard PC/AT BIOS will report an error or
fail during power-on self-test (POST) after a reset. The PCM 3362's BIOS standard
setup menu allows you to select "All, But Keyboard" under the "Halt On" selection.
This allows no-keyboard operation in embedded system applications, without the
system halting under POST.