HP Notebook PC Metal Surfaces and 3-Prong Grounded AC Adapters - Whitepaper

The slight tingling sensation discussed herein has been present in the electronics industry for numerous

years and is common on notebook PC products and other electrical devices and appliances that

utilize metal surfaces and 2-prong ungrounded AC adapters. HP Notebook PC models include a

3-prong grounded AC adapter to help minimize the presence of slight tingling sensations as well as

for compliance, safety, and reliability reasons that are mentioned herein. In addition, HP has made

efforts to further reduce electric current leakage on typical notebook PC touch points such as the

palm-rest area.

Warning

To ensure continued compliance with regulatory requirements,

HP recommends that only HP-branded AC adapters, batteries,

and other accessories be used with HP Notebook PC products.

To reduce the risk of serious injury, read the Safety & Comfort

Guide included with HP products and available at

http://www.hp.com/ergo

The information contained herein is subject to change without notice. The only

warranties for HP products and services are set forth in the express warranty

statements accompanying such products and services. Nothing herein should be

construed as constituting an additional warranty. HP shall not be liable for technical

or editorial errors or omissions contained herein.

501907-001, July 2008