If you use a wired Ethernet connection on a Windows PC, you may have noticed a network adapter setting called Energy-Efficient Ethernet, or EEE. The name sounds pretty straightforward, but it can be confusing if you are not sure what it actually does or whether you should turn it on.
Energy-Efficient Ethernet is designed to reduce the amount of power your Ethernet adapter uses when network activity is low. For most people, it works quietly in the background without requiring any manual changes. However, in some situations, users may experiment with this setting because of network performance issues, connection drops, latency, or compatibility problems.
Windows does not provide one universal EEE switch for every computer. Whether you see the option depends largely on your Ethernet network adapter and its driver. If your adapter supports the feature, you can usually manage it through Device Manager.
In this guide, you will learn what Energy-Efficient Ethernet does, how to enable it, how to disable it, and what to consider before changing the setting.
What is Energy-Efficient Ethernet?
Energy-Efficient Ethernet, commonly called EEE, is a networking technology designed to reduce power consumption when an Ethernet connection is not actively transferring much data.
Normally, an Ethernet adapter remains powered and ready to send and receive network traffic. With EEE enabled, the adapter can enter a lower-power state during periods of reduced network activity. When traffic needs to resume, the adapter can return to its normal operating state.
The technology is associated with the IEEE 802.3az standard, which introduced a way for compatible Ethernet devices to save energy during periods of low utilization.
Think of it like a computer monitor going into a lower-power state when you are not using it. The goal is not to shut the device down completely. Instead, it reduces unnecessary power consumption while keeping the connection available.
For a typical desktop PC, the actual energy savings may not be dramatic. However, EEE can be useful in environments with many network-connected devices, such as offices, data centers, schools, and other larger installations.
There is another important point: EEE is controlled by the network adapter hardware and driver. That means two Windows computers can have completely different EEE options even if they are running the same version of Windows.
Some Ethernet adapters may call the setting Energy Efficient Ethernet, while others may use terms such as Green Ethernet, Power Saving Mode, or another manufacturer-specific name.
If you are troubleshooting a wired connection, EEE is one setting worth checking, especially when your Ethernet adapter or its driver provides the option.
How to enable energy-efficient Ethernet in Windows?
To enable Energy-Efficient Ethernet:
- Open Device Manager in Windows.
- Go to Network adapters and expand the section to find your wired Ethernet adapter.
- Open the adapter’s Properties and select the Advanced tab.
- Find Energy Efficient Ethernet (EEE) or a similar power-saving option in the property list.
- Select the setting, choose Enabled from the Value menu, and click OK.
The exact wording can vary depending on your Ethernet adapter manufacturer, chipset, and driver version.
If you cannot find an EEE option, that does not necessarily mean something is wrong with Windows. Your adapter may simply not expose the feature through its current driver.
Step 1: Open Device Manager
Start by opening Device Manager, which is the Windows utility used to manage hardware and hardware drivers.
The easiest way is to right-click the Start button and select Device Manager. You can also press Windows + X and select Device Manager from the menu.
Once Device Manager opens, you will see a long list of hardware categories. You do not need to change anything yet. The setting you want is located under your computer’s network adapters.
Step 2: Find Your Ethernet Adapter
In Device Manager, locate Network adapters and double-click it to expand the category.
You will probably see several entries. Your computer might have a Wi-Fi adapter, Bluetooth networking hardware, virtual adapters, and one or more Ethernet adapters.
Look for the adapter that represents your wired Ethernet connection. Its name may contain terms such as Ethernet, Gigabit, Realtek, Intel, Killer, or another hardware manufacturer or chipset name.
Be careful not to change the settings for your Wi-Fi adapter. You specifically want the wired Ethernet adapter.
Step 3: Open the Adapter Properties
Once you identify the Ethernet adapter, right-click it and select Properties.
A new window will appear with several tabs. You may see tabs for general information, driver details, events, power management, and advanced hardware settings.
Select the Advanced tab.
This section contains various adapter-specific settings. The available options are different from one computer to another, so do not be concerned if your list does not look exactly like someone else’s Windows PC.
Step 4: Locate Energy-Efficient Ethernet
Under the ‘Property’ section, look through the available settings for Energy Efficient Ethernet.
Depending on your adapter, the option might appear as Energy Efficient Ethernet, Energy-Efficient Ethernet, EEE, or a related power-saving feature.
Select the setting. You should see a Value area on the right side of the window.
If your adapter supports the feature, the value may currently show Disabled or Enabled. Click the value and select Enabled.
If you do not see the option at all, check your adapter’s other advanced properties for a similarly named setting. If it is still missing, your current hardware or driver may not provide an EEE control.
Step 5: Apply the Setting
After selecting Enabled, click OK to save the change.
Windows may briefly reset the Ethernet connection while the adapter applies the new configuration. If your connection temporarily disconnects, give it a few moments to reconnect.
Once the adapter comes back online, Energy-Efficient Ethernet should be enabled.
You can return to the same Device Manager location at any time to verify the setting.
How to Disable Energy-Efficient Ethernet?
Disabling EEE uses almost the same process. If you are troubleshooting an Ethernet connection and suspect that a power-saving feature is contributing to the problem, you can test your connection with EEE turned off.
Step 1: Open Device Manager
Right-click Start and select Device Manager. You can also press Windows + X and choose Device Manager.
Step 2: Open Network Adapters
Expand Network adapters and locate your wired Ethernet adapter. Make sure you select the correct adapter rather than your wireless network device.
Step 3: Open Ethernet Properties
Right-click your Ethernet adapter and select Properties. Then open the Advanced tab.
Step 4: Select the EEE Setting
Find Energy Efficient Ethernet, EEE, or a similar power-management option in the property list.
Select it and look at the Value section.
Step 5: Choose Disabled
Change the value to Disabled, then click OK.
Your Ethernet connection may briefly reset. After it reconnects, EEE will be disabled.
If you are troubleshooting a problem, test your connection for a while after making this change. If the issue disappears, EEE or another adapter power-management feature could have been involved. If nothing changes, you can consider restoring the previous setting.
Additional Tips
Before changing Ethernet settings, remember that not every network adapter behaves the same way. The available advanced options depend on the adapter, driver, and sometimes the computer manufacturer.
If Energy Efficient Ethernet is missing, try checking for a newer Ethernet driver from your PC or motherboard manufacturer. Windows Update may also provide driver updates, although the manufacturer’s driver package can sometimes expose additional adapter settings.
You should also avoid changing several network settings at the same time. If you are troubleshooting a connection problem, change one setting at a time. That makes it much easier to determine which change actually affected the connection.
If your Ethernet connection is working normally, there is usually no urgent reason to disable EEE. Keeping EEE enabled can provide power savings, particularly when the adapter spends significant time handling little network traffic.
On the other hand, if you experience unusual connection interruptions, latency behavior, or compatibility issues, disabling EEE can be a useful troubleshooting test.
Keep in mind that EEE is only one possible cause of a network problem. Issues can also come from Ethernet cables, network drivers, routers, switches, network adapter settings, or Windows networking components.
If you change the setting and want to return to the original configuration, simply go back to the same property and restore its previous value.
Faqs
Does Energy-Efficient Ethernet improve internet speed?
Generally, no. EEE is primarily designed to reduce power consumption rather than increase internet speed. Your actual internet performance depends on factors such as your internet connection, Ethernet hardware, network equipment, drivers, and network conditions.
Should I enable Energy-Efficient Ethernet?
If your Ethernet connection is working properly, leaving EEE enabled is generally reasonable. It allows compatible hardware to use its power-saving capabilities during periods of low network activity.
Can Energy-Efficient Ethernet cause connection problems?
It can sometimes be worth testing EEE when troubleshooting certain Ethernet problems, particularly if you notice intermittent connectivity or unusual behavior. However, EEE is not automatically the cause of networking problems.
Why can’t I find Energy-Efficient Ethernet in Windows?
The setting may be unavailable because your Ethernet adapter does not support EEE, your current driver does not expose the option, or your adapter uses a different name for a similar feature.
Is Energy-Efficient Ethernet the same as Wi-Fi power saving?
No. EEE applies to compatible wired Ethernet connections. Wi-Fi adapters have their own power-management mechanisms and settings.
Will disabling EEE make my Ethernet connection faster?
Usually, you should not expect a major speed increase simply from disabling EEE. However, if EEE is contributing to a particular compatibility or connectivity issue, turning it off may make the connection more stable.
Do I need to restart Windows after changing EEE?
Usually, a complete Windows restart is not required. The Ethernet adapter may briefly reset its connection when you apply the change. If Windows or your adapter driver specifically asks you to restart, follow that instruction.
Summary
Energy-Efficient Ethernet is a power-saving technology that reduces the power consumption of compatible Ethernet hardware during periods of low network activity. In Windows, the setting is usually available through Device Manager > Network adapters > Ethernet adapter > Properties > Advanced.
To enable it, find Energy Efficient Ethernet and set it to Enabled. To disable it, return to the same setting and choose Disabled.
For most users, EEE is simply a background power-saving feature that can remain enabled. If you are troubleshooting an Ethernet connection, though, testing the connection with EEE disabled can help determine whether the setting is contributing to the problem.
Remember that the option and its exact name can vary depending on your Ethernet adapter and driver.