GL815E Endura Motherboard Product Manual
Page 13 of 51
1.4.2 Front Panel Connections
The primary controls and indicators for the motherboard are connected via the front panel connector
using either a single ribbon cable to a 'front panel' assembly, or using a number of small PC-
standard connectors. The functions are described below. See appendix B for the connector pin-out
information.
Power LED
This can be used to connect either a single-color LED (usually green) or a two-terminal bi-color LED
(usually green/yellow) to indicate the powered status of the motherboard. In both cases, the 'green'
anode should be attached to pin 2 of the front panel connector. See the Indicators section later in
this document for further information.
Power Switch
A momentary switch should be connected between pins 6 and 8 of the power connector if the
motherboard is used with a soft-switch power supply. If the switch is closed for greater than
approximately 4 seconds, the motherboard will power off immediately, regardless of the state of the
operating system, losing any system context information. This switch is redundant when using a
hard-switch power supply.
Reset Switch
If used, a momentary switch connected between pins 5 and 7 will cause the motherboard to restart
when closed.
Hard Disk LED
A single color LED should be connected between pins " (anode) and 3 to indicate hard disk activity
on either of the two ATA channels.
Speaker
Connect an external speaker between pins "0 and "" or "0 and "6. This is used only for the PC
'beep' functions - it cannot be used as an output of the audio CODEC. The speaker should typically
be 8#.
Tamper Switch
Connect a momentary switch between pins "8 and 20 to make use of the tamper detection logic of
the motherboard. The switch should be open when the chassis is closed.
Infra-red port
Pins 9, "", "3 and "5 provide an interface to an infra-red receiver/transmitter module. Pins 9 and "3
provide the +5V module power and signal ground return.
