HP dx2450 manual Hardware Upgrades

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2 Hardware Upgrades

Warnings and Cautions

Before performing upgrades be sure to carefully read all of the applicable instructions, cautions, and warnings in this guide.

WARNING! To reduce the risk of personal injury from electrical shock, hot surfaces, or fire:

Disconnect the power cord from the wall outlet and allow the internal system components to cool before touching.

Do not plug telecommunications or telephone connectors into the network interface controller (NIC) receptacles.

Do not disable the power cord grounding plug. The grounding plug is an important safety feature.

Plug the power cord in a grounded (earthed) outlet that is easily accessible at all times.

To reduce the risk of serious injury, read the Safety & Comfort Guide. It describes proper workstation, setup, posture, and health and work habits for computer users, and provides important electrical and mechanical safety information. This guide is located on the Web at http://www.hp.com/ergo.

CAUTION: Static electricity can damage the electrical components of the computer or optional equipment. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object. See Appendix D, Electrostatic Discharge on page 49 for more information.

When the computer is plugged into an AC power source, voltage is always applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent damage to internal components.

8 Chapter 2 Hardware Upgrades

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Contents Hardware Reference Guide dx2450 Microtower Model Hardware Reference Guide About This Book Iv About This Book Table of contents Appendix D Electrostatic Discharge Product Features Standard Configuration FeaturesFront Panel Components 1Front Panel ComponentsMedia Card Reader Components 2Media Card Reader ComponentsRear Panel Components 3Rear Panel ComponentsKeyboard 4Keyboard ComponentsUsing the Windows Logo Key 5Windows Logo Key FunctionsSerial Number Location 6Serial Number and Product ID LocationHardware Upgrades Removing the Computer Access Panel 1Removing the Computer Access PanelReplacing the Computer Access Panel 2Replacing the Computer Access Panel Hardware UpgradesRemoving the Front Bezel 3Removing the Front BezelRemoving Bezel Blanks Replacing the Front Bezel 5Replacing the Front BezelDDR2-SDRAM DIMMs Installing Additional MemoryDIMMs Populating Dimm Sockets Description Socket ColorInstalling DIMMs Enww Removing or Installing an Expansion Card 1Expansion Slot LocationsRemoving or Installing an Expansion Card 11Removing a Standard PCI Expansion Card Hardware Upgrades Enww Enww Drive Positions 15Drive PositionsInstalling Additional Drives 16Extra Drive Retainer Screws Location Hardware UpgradesInstalling Additional Drives System Board Drive Connections 2System Board Drive ConnectionsRemoving an Optical Drive 19Removing the Optical Drive Hardware Upgrades Installing an Optical Drive into the 5.25-inch Drive Bay 20Installing the Optical DriveRemoving an External 3.5-inch Drive Enww Installing a Drive into the 3.5-inch External Drive Bay 24Removing a 3.5-inch Device Media Card Reader ShownEnww Removing an Internal 3.5-inch Hard Drive Enww 30Removing the Hard Drive Hardware Upgrades Installing an Internal 3.5-inch Hard Drive 31Installing the Hard Drive in the Drive Cage33Installing the Hard Drive Cage Hardware Upgrades Enww Specifications Table A-1SpecificationsRated Input Current maximum Battery Replacement Type Enww Cable Lock Installing a Security LockExternal Security Devices Padlock HP Business PC Security LockEnww Enww Grounding Methods Electrostatic DischargePreventing Electrostatic Damage Computer Operating Guidelines and Routine Care Safety Optical Drive PrecautionsCleaning Shipping PreparationIndex Enww