About wake up from S3 mode problem in WinXP.



I want to wake up my system from S3 mode in WinXP+SP1 by using USB keyboard.
But I can't find the power management in the HID Keyboard Device's
properties of Device Manager.
I have check the relative options in the BIOS. It's all ready.
It is still unable to wake the system up.

But when I install HCT 11.2 and restart the computer, it's appeared
"Power Management" tab in HID Keyboard Device's properties of Device
Why? What's the problem??
Can I have the power management tab but install HCT 11.2?

Can anyone help me? Thanks.


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