Posted by: kurtsh | May 19, 2006

RELEASE: WinXP Laptop Power consumption patch

This has been well known for a while but we haven’t publicly posted a patch for it until now.  Basically, if you’re actively using USB 2.0 ports your laptop may be consuming far more power than necessary if it’s using Windows XP with Service Pack 2 (which hopefully is pretty much everyone for security reasons) because SP2 made a change to the OS that prevented the system from putting the CPU into a slower/less power thirsty state when activity was low, when USB 2.0 devices were in use.
 
This patch will do nothing for you if you don’t use USB 2.0 devices actively on your laptop.  Most common scenarios are USB 2.0 network adapters, USB 2.0 flash drives, USB 2.0 port replicators, USB 2.0 mice, etc.
 

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