• Turn off the computer, and then disconnect all cables. Disconnect the Ethernet or modem cable before disconnecting the power cord.
• Move the computer to a clear, flat, stable work surface over a non-carpeted floor.
• HP strongly recommends the use of an anti-static wrist strap and a conductive foam pad when working on the computer.
• Do not remove a component from its protective packaging until you are ready to install it.

  note:

Part numbers are subject to change.

  note:

For customers in countries/regions with RoHS legislation* (e.g. EU, China, etc.) restricting the use of hazardous substances in electrical equipment. The use of the Original Spare part is regulated by RoHS legislation. If your unit contains a part that is labelled with the Modified Spare number, the Modified Spare must be ordered as the replacement part. If your unit contains a part that is labelled with the Original Spare number, please order the Original Spare as the replacement part. In this case either the Original Spare or the Modified Spare may be shipped which will not affect performance or functionality of the unit.

  caution:

Review the following safety considerations before performing the following steps. Failure to comply with these safety considerations could result in damage to the product.