Option 2: Allow this device to wake the computer.

Option 1: Allow the computer to turn off this device to save power.

You have three options for the power management properties of the Network Card: A value of 24 will prevent Windows 7 from turning off the network adapter or let the network adapter wake the computer from standby.

Only allow a magic packet to wake the computerīy default, a value of 0 indicates that power management of the network adapter is enabled.

In Windows 7 or Windows Server 2008 R2, you have two additional check boxes on the Power Management tab for the Network Adapter that defines whether this device can wake the computer: To disable this setting in Device Manager, expand Network Adapters, right-click the adapter, select Properties, select the Power Management tab, and then clear the Allow the computer to turn off this device to save power check box. You can use Device Manager to change the power management settings for a network adapter. This setting is useful if a network card driver says it supports going to different sleep states and back to D0 but it ultimately doesn't support this functionality. When this setting isn't checked(disabled), Windows completely halts the device and on resume reinitializes it. When this setting is checked(enabled), Windows puts the network card to sleep and when it resumes it puts it back to D0. Windows never turns off the network card due to inactivity. This setting can be used if a driver misrepresents how it handles sleep states. The Allow the computer to turn off this device to save power setting controls how the network card is handled when the computer enters sleep. When deploying Windows 7 or Windows Server 2008 R2, you may want to disable the following network adapter power management setting on some computers:Īllow the computer to turn off this device to save power More information Furthermore, you can configure the power management settings to meet the needs of your users through device properties, standard registry settings. It allows computers to sleep for longer periods of time when idle. The enhancements made to Windows 7 for managing power settings for network adapters greatly reduces the number of spurious wakes. This article provides a resolution to disable network adapter power management on a single computer.Īpplies to: Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1 Original KB number: 2740020 Summary

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