MSI Z97 MPOWER MAX AC Manual - Manual (Page 44)

Chapter 1
1-30 Getting Started
DISCH1: Discharge Button
This button allows you to discharge the motherboard by using the button instead of
removing the battery. You can discharge the motherboard by pressing this button
while the system is off.
FASTB1: GO2BIOS Button
If you enable the "MSI Fast Boot" feature in BIOS, the keyboard will be unavaiable
and entering BIOS Setup by pressing DEL will not function. Therefore, you can press
this button to enter BIOS Setup after reboot.