Advantech AIMB-341, Руководство пользователя, Страница: 29 / 84

19 Chapter 2
The HDD LED indicator for hard disk access is an active low signal (24
mA sink rate). The HDD LED indicator lights up when the HDD is read-
ing or writing.
2.18.3 Power LED (Pin 3 & Pin 4)
The Power LED indicator lights up when the power is on.
2.18.4 Suspend LED (Pin 5 & Pin 6)
The Suspend LED indicator lights up when the computer is in suspend.
2.18.5 Power Button (Pin 11 & Pin12)
AIMB-341 provides an ATX power input connector. When connected
with PIN 9 & PIN 10, it enables power On/Off from the chassis.
2.18.6 LAN LED(Pin7, 8, 9, 10)
The LAN LED indicator lights up when the LAN stay connected.
2.19 COM port connector (CN1,CN16,CN28)
The AIMB-341 provides six serial ports (COM1,COM3~COM6: RS-232
and COM2: RS-232/RS-422/RS-485). CN1 supports COM1 with D-SUB
9-Pin standard connector, CN28 supports COM2, CN16 supports
COM3~6,. and JP5 is for COM2 RS-232/RS-422/RS-485 selection. It
provides connections for serial devices (a mouse, etc.) or a communica-
tion network. You can find the pin assignments for the COM port connec-
tor in Appendix B.
2.20 MINI PS/2, KB/Mouse connector (CN8)
The AIMB-341 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 AIMB-341’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.
2.21 Audio Connector (CN6)
AIMB-341 can support AC97 2.2 compliant Audio line_in, line_out and
mic_in with on board standard connector.