MSI 815 PRO Manual page 14

2.4 Case Connector: J10
The Keylock, Power Switch, Reset Switch, Power LED, Speaker, and HDD
LED are all connected to the JFP1 connector block.
Reset
Switch
15
Speaker
14
Buzzer
(short
pin)
Keylock (Reserved)
J10
2-10
Power
Switch
+
Single
Dual
Color
Color
LED
LED
Power LED
+
HDD
LED