Using external AC power

External AC power is supplied through an approved AC adapter or an HP Slate Dock.

WARNING! To reduce potential safety issues, use only the AC adapter provided with the Slate, a replacement AC adapter provided by HP, or a compatible AC adapter purchased from HP.

Connect the Slate to external AC power under any of the following conditions:

WARNING! Do not charge the battery while you are onboard aircraft.

When charging or calibrating a battery

When installing or modifying system software

When writing information to an optional external drive

When running Disk Defragmenter

When performing a backup or recovery

When you connect the Slate to external AC power, the battery begins to charge.

When you disconnect external AC power, the Slate switches to battery power.

Protecting the Slate from power surges

To protect the Slate from power surges that may be caused by an uncertain power supply or an electrical storm, observe these practices:

Plug the Slate power cord into a high-quality surge protector (purchased separately). Surge protectors are available from most consumer hardware or electronics retailers.

During an electrical storm, either run the Slate on battery power, or shut down the Slate and then unplug the power cord.

40 Chapter 5 Power management