User manual

ASUS X99-A II
1-27
Chapter 1
• System power LED (4-pin PLED)
This2-pinconnectorisforthesystempowerLED.ConnectthechassispowerLED
cable to this connector. The system power LED lights up when you turn on the system
power,andblinkswhenthesystemisinsleepmode.
• Hard disk drive activity LED (2-pin HDD_LED)
This2-pinconnectorisfortheHDDActivityLED.ConnecttheHDDActivityLEDcable
tothisconnector.TheHDDLEDlightsuporasheswhendataisreadfromorwritten
totheHDD.
• System warning speaker (4-pin SPEAKER)
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
• ATX power button/soft-off button (2-pin PWRSW)
Thisconnectorisforthesystempowerbutton.Pressingthepowerbuttonturnsthe
system on or puts the system in sleep or soft-off mode depending on the operating
systemsettings.Pressingthepowerswitchformorethanfoursecondswhilethe
systemisONturnsthesystemOFF.
• Reset button (2-pin RESET)
This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.
• Chassis intrusion connector (2-pin CHASSIS)
Thisconnectorisforachassis-mountedintrusiondetectionsensororswitch.Connect
one end of the chassis intrusion sensor or switch cable to this connector. The chassis
intrusionsensororswitchsendsahigh-levelsignaltothisconnectorwhenachassis
componentisremovedorreplaced.Thesignalisthengeneratedasachassisintrusion
event.
8. System panel connector (20-3 pin PANEL)
Thisconnectorsupportsseveralchassis-mountedfunctions.