Lenovo 8146, 8423, 8427, 8422, 8143, 8144, 8097 manual Installing a memory module

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The following illustration shows the locations of parts on the system board.

1	12V power connector	13	SATA 2 IDE connector
2	Diskette drive connector	14	SATA 1 IDE connector
3	Speaker connector	15	Cover presence switch connector
4	Memory module connector 4	16	Power supply connector
5	Memory module connector 3	17	PCI Express x16 graphics adapter
			connector
6	Memory module connector 2	18	PCI Express x1 adapter connector
7	Memory module connector 1	19	PCI connector
8	Clear CMOS/Recovery jumper	20	PCI connector
9	Front Panel connector	21	Battery
10	PATA IDE connector	22	Microprocessor
11	SATA 4 IDE connector	23	Microprocessor fan connector
12	SATA 3 IDE connector	24	Microprocessor heat sink

Installing a memory module

Your computer has four connectors for installing dual inline memory modules that provide up to a maximum of 4.0 GB of system memory.

Note: Addressable memory might be less than total supported memory.

System memory is divided into two channels (channel A and B). Memory module connectors 1 and 2 are designated as channel A, and memory module connectors 3 and 4 are designated as channel B. If memory modules are present in both channels, your computer operates in dual channel mode.

Your computer has either double data rate (DDR) or double data rate 2 (DDR2) memory. The type of memory required depends on the system board that is installed.

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Contents

User Guide Types 8097, 8143, 8144 Types 8422, 8423 Page User Guide Types 8097, 8143, 8144 Types 8422, 8423 Page Contents Iv User Guide Important safety information Conditions that require immediate actionGeneral safety guidelines ServicePower cords and power adapters Extension cords and related devicesPlugs and outlets BatteriesCD and DVD drive safety Heat and product ventilationLithium battery notice Additional safety informationTo connect To disconnect Modem safety information Laser compliance statementPower supply statement Overview Information resourcesXiv User Guide Installing options FeaturesMemory Operating systems, preinstalled varies by model type Available options Specifications Tools required Installing external optionsHandling static-sensitive devices Locating the connectors on the front of your computer Locating the connectors on the rear of your computer Connector Description Obtaining device driversRemoving the cover Locating components Identifying parts on the system boardInstalling a memory module What to do next Installing adapters Installing internal drives Drive specifications Installing a drive in bay 1 or bay Installing a hard disk drive in bay Installing options Connecting drives Connecting the first optical driveConnecting a serial ATA hard disk drive Installing security featuresChanging the battery Password protectionPadlock Erasing a lost or forgotten password clearing Cmos Replacing the cover and connecting the cables Using the Setup Utility program Starting the Setup Utility programViewing and changing settings Using passwordsUser Password Administrator PasswordIDE Drive User Password IDE Drive Master PasswordUsing Security Profile by Device Setting, changing, and deleting a passwordSelecting a startup device Selecting a temporary startup device Exiting from the Setup Utility programChanging the startup sequence Updating flashing Bios from a diskette or CD-ROM Updating flashing Bios from your operating systemAppendix A. Updating system programs System programsRecovering from a POST/BIOS update failure Cleaning an optical mouse Appendix B. Cleaning the mouseCleaning a mouse with a ball User Guide Appendix C. Manual modem commands Basic AT commandsLow speaker volume Set Pulse dial as defaultSet Tone Dial as default Internal speaker on until carrier detectedExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 1 commands Fax Class 2 commandsVoice commands Appendix C. Manual modem commands User Guide Appendix D. Notices Television output notice TrademarksIndex Page Page Part Number 19R0450