User Manual
Page 60
4.4.6 ACPI Configuration B450M-HDV Suspend to RAM It is recommended to be waked up by a PCIE device and enable wake on LAN. PCIE Devices Power On Allow the system to select auto for better performance and to let it to By OS to pass WHQL tests. RTC Alarm Power On Allow the system to be waked up by your operating system. 55 English PS/2 Keyboard S4/S5 Wakeup Support Allow the system to be handled by the real time clock alarm. Set it be waked up by a PS/2 Keyboard. ACPI HPET Table Enable the High Precision Event Timer for ACPI S3 power saving.
4.4.6 ACPI Configuration B450M-HDV Suspend to RAM It is recommended to be waked up by a PCIE device and enable wake on LAN. PCIE Devices Power On Allow the system to select auto for better performance and to let it to By OS to pass WHQL tests. RTC Alarm Power On Allow the system to be waked up by your operating system. 55 English PS/2 Keyboard S4/S5 Wakeup Support Allow the system to be handled by the real time clock alarm. Set it be waked up by a PS/2 Keyboard. ACPI HPET Table Enable the High Precision Event Timer for ACPI S3 power saving.