HP Nc6220 Hardware-Software Guide - Page 117

8 Memory Modules What Is a Memory Module? Å WARNING: To prevent electric shock or damage to your notebook, only access the memory compartments and the primary hard drive. The memory compartments and the primary hard drive are the only user-accessible internal compartments on the notebook. All other areas that require a tool to open should be opened only by a service partner. Å WARNING: To prevent electric shock or damage to your notebook, unplug the power cord and remove all battery packs before installing a memory module. Ä CAUTION: To prevent damage to electronic components from electrostatic discharge (ESD), before beginning any procedure, ensure that you are discharged of static electricity by touching a grounded metal object. For more information, refer to the Regulatory and Safety Notices guide on the Notebook Documentation CD. A memory module, sometimes called a memory card, is a narrow, printed circuit board that holds memory chips. A memory module is inserted into a memory slot. The notebook has 2 memory module compartments. The primary memory module compartment is located under the keyboard. The expansion memory module compartment is located on the bottom of the notebook. The memory capacity of the notebook can be upgraded by adding a memory module to the expansion slot or by upgrading the existing memory module in the primary memory module slot. Hardware and Software Guide 8-1