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The issue is that when I remove a USB device (I've tested hard drives and mice), the computer wakes up from sleep mode.

The only thing I've been able to find are links with this solution:

Unfortunately, when I attempt it, in the final step, there is no "Power Management" tab. This also doesn't address the problem of removing other peripherals.

Help? Thanks,

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You want the computer to stay asleep as you pull off things that are connected to it? Or are you having sleep problems? – Psycogeek Feb 19 '12 at 16:13
"computer to stay asleep as you pull off things that are connected to it" – imallett Feb 20 '12 at 18:40

Check power management settings for all "hub"s listed under "Universal Serial Bus Controllers" in device manager.

.enter image description here

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I had looked under USB Host Controllers, and didn't see the power management tab. I DO see them for the hubs, though. Unfortunately, they are already all set to allow-computer-to-turn-off-to-save-power, and the allow-wake is greyed out, but already deselected. Thanks, – imallett Feb 20 '12 at 18:39

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