HP TC4400 - Manual (Page 11)

Product Description
Maintenance and Service Guide 1–5
1.3 Power Management
The tablet PC comes with power management features that
extend battery pack operating time and conserve power. The
tablet PC supports the following power management features:
■ Standby
■ Hibernation
■ Setting customization by the user
■ Hotkeys for setting the level of performance
■ Battery calibration
■ Lid switch resume
■ Power button
■ Advanced Configuration and Power Management (ACPM)
compliance