A connector found on a
motherboard that supports a
chassis security feature that
detects if a chassis component is removed or replaced, in which case an
alarm sound is heard through the onboard speaker or
PC chassis speaker if
present. For the chassis intrusion circuit to work, the chassis power supply
must be connected to AC power. By default, on the motherboard the pin labeled
chassis "signal" and "ground" are shorted with a jumper cap. You need to remove
the jumper caps if you intend to use the chassis intrusion detection
hardware.
See also "Motherboards:
What You Should Know" in the
Quick Reference section of Webopedia.