Apple MD771LL/A manual Installing Memory

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Installing Memory

Your Mac Pro has two memory cards with 4 memory slots on each card (in four banks of two each). Your Mac Pro comes with a minimum of 1 GB of memory, installed as a pair of 512 MB fully buffered dual inline memory modules (FB-DIMMs) in two of the DIMM slots. You can install additional pairs of 512 MB, 1 GB, or 2 GB FB-DIMMS in the open DIMM slots on the memory cards.

DIMMs must be installed in equal-sized pairs and fit these specifications:

å667 MHz, FB-DIMMS

å72-bit wide, 240-pin modules

å36 devices maximum per DIMM

åError-correcting code (ECC)

Important: Apple recommends that you use Apple-approved FB-DIMMS. Non Apple- approved FB-DIMMS may cause your Mac Pro to operate louder or decrease performance to conserve heat. DIMMs from older Mac computers cannot be used in your Mac Pro.

Note: When purchasing DIMMs for use in Mac computers, make sure that the memory vendor conforms to the Joint Electron Device Engineering Council (JEDEC) specification. Check with your memory vendor to ensure that the DIMMs support the correct timing modes and that the Serial Presence Detect (SPD) feature has been programmed properly, as described in the JEDEC specification. To check the compatibility of your DIMMs, see the Macintosh Products Guide on AppleÕs website at www.apple.com/guide. You can purchase Apple-branded memory online from the Apple Store at www.apple.com/store.

32Chapter 3 Working Inside Your Computer

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Contents User’s Guide Page Contents Regulatory Compliance Information IndexSetting Up Your Mac Pro Getting StartedPosition your computer and display Plug in the power cord Connect the display Port Connect an Ethernet cable Connect the keyboard and mousePlug the mouse into a USB port on the keyboard KeyboardMouse Need Help Setting Up? Using a Wireless Keyboard and MouseUse Setup Assistant Turn on your Mac ProPutting Your Mac Pro to Sleep or Shutting It Down Putting Your Mac Pro to SleepShutting Down Your Mac Pro To wake your computer from sleep, do one of the followingGetting to Know Your Mac Pro Getting the Latest InformationBasic Features on the Front of Your Mac Pro FireWire 400 and 800 ports Ports and Connectors on the Back of Your Mac Pro Power socket More Ports and Connectors on the Back PCI Express expansion slots Internal Expansion Options Optical drives To open Mac Help Getting AnswersMore Information Open System Preferences by choosing Apple S ystem Page Working Inside Your Computer Opening the Computer Unplug all the cables and the power cord from the computer Lift the latch while holding the side panel Remove the side panel Installing Memory To install memory Top memory card Working Inside Your Computer Place the side panel in the slot and then push to close Push the latch down to secure the side panel Installing Internal Storage Devices Installing Sata 3 Gbit/s Hard Disk DrivesTo install a hard disk drive Position the connectors towards the rear Replace the side panel and push the latch down to secure it Replacing the Optical Drive To replace the optical driveWorking Inside Your Computer Four extra screws Power cable middle connector Ribbon cable end connector Replace the side panel and push the latch down to secure it About PCI Express Cards To install a PCI Express cardAdding PCI Express Cards Port access cover Did You Know?-Installing a Full-Length PCI Card Port access opening PCI Express slotReplacing the Internal Backup Battery To replace the batteryWorking Inside Your Computer Page Problems with Your Mac Pro Computer won’t respond or the pointer won’t moveComputer won’t turn on or start up Status light flashes and the computer won’t start up You are unable to eject a discIf that doesn’t work To force an application to quit Problems with SoftwareYou have a problem with a software program Keeping Your Software Up to Date Problems with AirPort Wireless CommunicationTo check for updated software Problems with Your Display No image appears on the screenAfter you change the screen resolution, desktop icons move Screen image appears dim or flickersProblems with Your Internet Connection To use Network DiagnosticsScreen freezes Light on the front of the display is flashingTurn the modem off and on to reset the modem hardware Check System Preferences settingsCable Modem, DSL, and LAN Internet Connections PPPoE ConnectionsNetwork Connections Using Apple Hardware Test To use Apple Hardware TestReinstalling the Software That Came with Your Computer Installing Mac OSInstalling Applications To install Mac OSMaximizing Ethernet Performance Learning More, Service, and Support Online Resources Onscreen HelpSystem Profiler Apple Hardware TestAppleCare Service and Support Information Country Phone WebsiteLocating Your Serial Number Processor and Memory Specifications Random-access memory RAMProcessor AppendixSuperDrive DVD+R DL/DVD±RW/CD-RW Specifications Graphics CardVideo Display Modes Data formatsUSB Specifications FireWire SpecificationsPower Ethernet SpecificationsBluetooth 2.0+EDR Specifications Optional AirPort Extreme Specifications Optional Optical Digital Audio SpecificationsCompatibility Optical digital audio outAnalog audio line in typical values Analog Audio SpecificationsAnalog audio out using the headphone jack typical values Power Supply Power Requirements for Expansion Cards and PeripheralsSystem Clock and Battery Dimensions and Operating EnvironmentBattery DimensionsSafety, Maintenance, and Ergonomics General Maintenance Apple and the EnvironmentProtecting Your Optical Drive Maintaining Your DisplayTo keep your optical drive working properly To maintain your display and ensure its long lifeImportant Ergonomic and Health-Related Information Forearms and hands in a straight line Avoid Hearing Damage Compliance Statement Wireless Radio Use Korea Mouse Statement Apple and the Environment Disposal and Recycling Information Taiwan European Union-Disposal Information Page Index Index