Asus PRIME B250M-PLUS Motherboard Pin Definition.English - Page 17

5 Onboard buttons and switches Onboard buttons allow you to fine-tune performance when working on a bare or opencase system. This is ideal for overclockers and gamers who continually change settings to enhance system performance. 1. Power-on button (START) The motherboard comes with a power-on button that allows you to power up or wake up the system. The button also lights up when the system is plugged to a power source indicating that you should shut down the system and unplug the power cable before removing or installing any motherboard component. 2. RESET button (RESET) Press the reset button to reboot the system. RESET 3. MemOK! button (MemOK!) Installing DIMMs that are not compatible with the motherboard may cause system boot failure. Press the MemOK! button until the memory compatibility tuning for successful boot. • Turn off the system and reinstall the DIMM before using the MemOK! function. • The MemOK! button does not function under Windows® OS environment. • During the tuning process, the system loads and tests failsafe memory settings. It takes about 30 seconds for the system to test one set of failsafe settings. If the test fails, the system reboots and test the next set of failsafe settings. • Due to memory tuning requirement, the system automatically reboots when each timing set is tested. If the installed DIMMs still fail to boot after the whole tuning process, replace the DIMMs with ones recommended in the Memory QVL (Qualified Vendors Lists) in this user manual or on the ASUS website at www.asus.com. • If you turn off the computer and replace DIMMs during the tuning process, the system continues memory tuning after turning on the computer. To stop memory tuning, turn off the computer and unplug the power cord for about 5-10 seconds. • If your system fails to boot up due to BIOS overclocking, press the MemOK! button to boot and load the BIOS default settings. A message will appear during POST reminding you that the BIOS has been restored to its default settings. • We recommend that you download and update to the latest BIOS version from the ASUS website at www.asus.com after using the MemOK! function. Motherboard Pin Definition 1-17