HP dc72 Client manual Installing Additional Memory, DDR2-SDRAM DIMMs

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Installing Additional Memory

The computer comes with double data rate 2 synchronous dynamic random access memory (DDR2- SDRAM) dual inline memory modules (DIMMs).

DIMMs

The memory sockets on the system board can be populated with up to four industry-standard DIMMs. These memory sockets are populated with at least one preinstalled DIMM. To achieve the maximum memory support, you can populate the system board with up to 8 GB of memory configured in a high- performing dual channel mode.

DDR2-SDRAM DIMMs

For proper system operation, the DDR2-SDRAM DIMMs must be:

industry-standard 240-pin

unbuffered PC2-4300 533 MHz-compliant, PC2-5300 667 MHz-compliant, or PC2-6400 800 MHz- compliant

1.8 volt DDR2-SDRAM DIMMs

The DDR2-SDRAM DIMMs must also:

support CAS latency 4 (DDR2/533 MHz and DDR2/667 MHz) and CAS latency 5 (DDR2/667 MHz and DDR2/800 MHz)

contain the mandatory JEDEC SPD information

In addition, the computer supports:

256Mbit, 512Mbit, and 1Gbit non-ECC memory technologies

single-sided and double-sided DIMMs

DIMMs constructed with x8 and x16 DDR devices; DIMMs constructed with x4 SDRAM are not supported

NOTE The system will not start if you install unsupported DIMMs.

ENWW

Installing Additional Memory 15

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Contents HP Compaq Business PC Hardware Reference Guide About This Book About This Book Table of contents Appendix D Electrostatic Discharge Standard Configuration Features Product FeaturesFront Panel Components Drive configuration may vary by model2Media Card Reader Components Media Card Reader Components3Rear Panel Components Rear Panel Components4Keyboard Components KeyboardUsing the Windows Logo Key Serial Number Location Special Mouse FunctionsEnww Serviceability Features Hardware UpgradesUsing the Small Form Factor Computer in a Tower Orientation Smart Cover FailSafe Key Unlocking the Smart Cover LockEnww 3Removing the Computer Cover Removing the Computer CoverReplacing the Computer Cover 4Replacing the Computer Cover Hardware UpgradesInstalling Additional Memory DIMMsDDR2-SDRAM DIMMs Description Socket Color Populating Dimm SocketsInstalling DIMMs Enww Description Removing or Installing an Expansion CardEnww 9Removing an Expansion Slot Cover Enww Enww 13Drive Positions Drive PositionsInstalling and Removing Drives Removing an Optical Drive 14Rotating the Drive Cage Up Hardware Upgrades16Rotating the Drive Cage Down 17Removing the Optical Drive Installing an Optical Drive into the 5.25-inch Drive Bay19Installing the Optical Drive 21Connecting the Power and Data Cables Hardware Upgrades Removing an External 3.5-inch Drive Enww Enww Installing a Drive into the 3.5-inch External Drive Bay Enww Enww Enww 32Removing the Security Clip Hardware Upgrades 34Disconnecting the Hard Drive Power Cable and Data Cable Enww Desktop Dimensions SpecificationsAppendix a Specifications Battery Replacement Type Figure B-2Removing and Replacing a Coin Cell Battery Type Enww Installing a Security Lock External Security DevicesCable Lock Padlock Electrostatic Discharge Preventing Electrostatic DamageGrounding Methods Appendix D Electrostatic Discharge Computer Operating Guidelines and Routine Care Cleaning Optical Drive PrecautionsSafety Shipping PreparationIndex Enww