Lenovo 8458, 8455, 8453, 8454, 8459, 8460, 8457, 8456 manual User Guide

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The following illustration shows the locations of parts on the system board for some computer models.

1	Microprocessor and heat sink	12	Front panel connector
2	Microprocessor fan connector	13	Front USB connectors (2)
3	Memory connector 1	14	Battery
4	Memory connector 2	15	PCI Express x1 adapter connector
5	Memory connector 3	16	Serial (COM2) connector
6	Memory connector 4	17	Front audio connector
7	Power connector	18	PCI adapter connectors
8	IDE connector	19	PCI Express x16 graphics adapter
			connector (some models)
9	Diskette drive connector	20	System fan connector
10	SATA IDE connectors (4)	21	12v power connector
11	Clear CMOS/Recovery jumper

14User Guide

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Contents User Guide Lenovo 3000 J Series Page Lenovo 3000 J Series Page Contents Iv User Guide Important safety information Conditions that require immediate actionGeneral safety guidelines ServicePower cords and power adapters Extension cords and related devices Plugs and outletsBatteries CD and DVD drive safety Heat and product ventilationAdditional safety information Lithium battery noticeTo connect To disconnect Modem safety information Laser compliance statementPower supply statement Overview Information resourcesXiv User Guide Installing options FeaturesConnectivity Operating systems, preinstalled varies by model Available options Weight SpecificationsDimensions EnvironmentSupported operating positions Tools requiredHandling static-sensitive devices Installing external options Locating connectors on the rear of your computer Connector Description Obtaining device driversRemoving the cover Locating components Accessing system board components Identifying parts on the system board User Guide Microprocessor and heat sink 10 Sata IDE connectors Fan connector 11 Clear CMOS/Recovery jumper Installing memory Installing PCI adapters What to do nextSecurity features Password protection Changing the batteryPadlock Erasing a lost or forgotten password clearing Cmos Replacing the cover and connecting the cables Viewing and changing settings Using the Setup UtilityStarting the Setup Utility program Using passwordsAdministrator or Supervisor Password Selecting a temporary startup device Exiting from the Setup Utility programSelecting a startup device Changing the startup device sequenceUser Guide Updating flashing Bios from a diskette Appendix A. Updating system programsSystem program User Guide Appendix B. Cleaning the mouse Cleaning an optical mouseCleaning a mouse with a ball User Guide Appendix C. Manual modem commands Basic AT commandsSet Tone Dial as default Low speaker volumeSet Pulse 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 41T3715