This article provides a description and details about Resume by PME

Resume By PME (Power Management Event) is a feature in computer systems that allows the computer to wake up or resume from a low-power state (such as sleep or hibernation) in response to certain events or signals. Here’s a detailed explanation:

Key Aspects of Resume By PME:

1. Definition:

   • PME refers to a set of signals or events that can trigger the system to exit a low-power state. These events can come from various sources, such as peripherals, network interfaces, or internal hardware components.

2. Functionality:

   • When enabled, the system can "wake up" from sleep or hibernation when it receives a PME signal. This allows users to resume their work quickly without having to manually turn the computer back on.
   • Typical sources of PME signals include:
     • Network cards: Wake-on-LAN (WoL) capabilities allow a system to be powered on or woken from sleep when it receives a specific network packet.
     • USB devices: Certain USB peripherals, such as mice or keyboards, can generate PME signals to wake the system.
     • PCI devices: Cards installed in the PCI slot may also have the ability to send PME signals.

3. Benefits:

   • Convenience: Users can easily wake the system by interacting with certain devices, enhancing usability and accessibility.
   • Energy Savings: The ability to resume by PME helps keep systems in low-power states for longer periods, which can reduce overall energy consumption.

4. Configuration:

   • The Resume By PME feature can typically be enabled or disabled in the system's BIOS/UEFI settings. Users may have options to specify which devices can trigger the resume action.
   • In operating systems, power management settings can also control how PME events are handled.

5. Usage Scenarios:

   • Home and Office Computing: Users can wake their computers by simply moving their mouse or pressing a key on the keyboard.
   • Network Management: Wake-on-LAN can be used in business environments to remotely wake up systems for maintenance or updates.

Summary

Resume By PME is a power management feature that allows a computer to wake from low-power states in response to specific events from peripherals or network interfaces. By enabling this functionality, users benefit from improved convenience and energy efficiency, as systems can remain in power-saving modes longer while still being readily accessible.