American Megatrends Atlas III PCI User Manual page 32

Step 5 Attach Cables,
J24 Keyboard Lock J24 is a 5-pin single-inline berg that is attached via a cable to the keyboard
lock connector (or separate keyboard lock and Power LED connectors). The
computer chassis may not include the keyboard lock and Power LED on a
single connector. The keyboard lock allows the user to lock the keyboard,
protecting the system from unauthorized use. Pin 1 on the motherboard is
identified by the broad arrow.
J20 IDE LED J20 is a two-pin berg that is attached via a cable to the externally-mounted IDE
Activity LED. This LED lights when the IDE drive is running.
In some IDE drives, you may have to disable the
jumper or setting a switch on the IDE drive itself,
26 Atlas PCI-III PCI Pentium ISA Motherboard User's Guide
Continued
Pin Description
1 VCC
2 Ground
3 Ground
4 Keyboard Lock (KBDINH)
5 Ground
Warning
IDE LED mounted on the drive by changing a
before the IDE drive sends a signal to J34.