MSI G41M-P34 User Manual page 19

Chassis intrusion Connector: JCi
this connector connects to the chassis intrusion switch cable. if the chassis
is opened, the chassis intrusion mechanism will be activated. the system will
record this status and show a warning message on the screen. to clear the
warning, you must enter the BioS utility and clear the record.
Parallel Port Header: JLPt
this connector is used to connect an optional parallel port bracket. the parallel
port is a standard printer port that supports enhanced Parallel Port (ePP) and
extended Capabilities Parallel Port (eCP) mode.
aPS Led Status indicator: Led
the aPS (active Phase Switching) Led indicates the current CPu power phase
mode. Follow the instructions below to read.
on the Led will glow when the CPu is in phase 2 or 3 power mode.
oFF the Led will go off when the CPu is in phase  power mode.
Led
MS-7592
9