- Bring up Network and Sharing Center, then find your Local Area Connection
- Click on Local Area Connection to bring up Local Area Connection Status, then click on the Properties button.
- In the Local Area Connection Properties, click the button near the top labeled Configure...
- You'll be taken to a new box labeled (something) Network Connection Properties.
Bwaa-hah-hah-hah-HA! You thought you were working with your connection properties, but now you have found your connection properties!
You are in a maze full of network properties, all alike...
- In the Network Connection Properties dialog, you will now see a tab labeled Power Management
- In the Power Management tab, you will find a checkbox:
Allow the computer to turn off this device to save power
On my machine, at least, this box was checked by default, which surprised me. I have a desktop computer! Why does Windows think it would be convenient or useful to sometimes turn off this device? Does it use a significant amount of power to keep my LAN network adapter running? I guess so...
Anyway, the point of this post, other than possibly letting you know about Yet Another Corner Of Windows 7 That You Haven't Visited Before, is to note that, although I found this checkbox, and I unchecked the checkbox, I am still a bit puzzled: how can I tell if this has had had any effect?
That is, how can I tell when Windows 7 has turned off my network connection device to save power, and how can I tell when Windows 7 has turned my device back on?