Enhanced Ide Interface Connector - AXIOMTEK SBC82621 User Manual

SBC82621 Socket370 Half-size All-in-One CPU Card User's Manual
Power LED
This 2-pin connector, designated at Pins 1 and Pin 5 of
CN3, connects the system power LED indicator to its
respective switch on the case. Pin 1 is +, and pin 5 is
assigned as -. The Power LED lights up when the system
is powered ON.
External Speaker and Internal Buzzer Connector
Pins 2, 4, 6, and 8 of CN3 connect to the case-mounted
speaker unit or internal buzzer. Short pins 4-6 when
connecting the CPU card to an internal buzzer. When
connecting an external speaker, set these jumpers to Open
and install the speaker cable on pin 8 (+) and pin 2 (-).
System Reset Switch
Pins 9 & 11 of CN3 connect to the case-mounted reset
switch and allow rebooting of your computer instead of
turning OFF the power switch. This is a preferred method
of rebooting in order to prolong the life of the system's
power supply.
HDD Activity LED
This connector extends to the hard drive activity LED on
the control panel. This LED will flash when the HDD is
being accessed. Pins 10 & 12 of CN3 connect the hard
disk drive and the front panel HDD LED. Pins 10 is -, and
pin 12 is assigned as +.

2.4.14 Enhanced IDE Interface Connector

The SBC82621 includes a PCI bus enhanced IDE controller
that can support master/slave mode and post write transaction
mechanisms with 64-byte buffer, and master data transaction.
This feature, connected via connector IDE1, allows the
SBC82621 to handle 2 IDE drives. Refer to Appendix B for the
pinout assignments of IDE1.
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Jumpers and Connectors