Lenovo 8455, 8453, 8454, 8459, 8460, 8457, 8458, 8456 Fan connector 11 Clear CMOS/Recovery jumper

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

1	Microprocessor and heat sink	10	SATA IDE connectors
2	Fan connector	11	Clear CMOS/Recovery jumper
3	Memory connector 1	12	Front panel connector
4	Memory connector 2	13	Front USB connectors
5	Power connector	14	Front audio connector
6	Diskette drive connector	15	PCI adapter connectors
7	PATA secondary IDE connector	16	AGP adapter connector
8	PATA primary IDE connector	17	System fan connector
9	Battery	18	12v power connector

16User 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 Batteries Extension cords and related devicesPlugs and outlets CD and DVD drive safety Heat and product ventilationTo connect To disconnect Additional safety informationLithium battery notice Modem safety information Laser compliance statementPower supply statement Overview Information resourcesXiv User Guide Installing options FeaturesConnectivity Operating systems, preinstalled varies by model Available options Specifications DimensionsWeight EnvironmentHandling static-sensitive devices Supported operating positionsTools required 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 Padlock Password protectionChanging the battery Erasing a lost or forgotten password clearing Cmos Replacing the cover and connecting the cables Using the Setup Utility Starting the Setup Utility programViewing and changing settings Using passwordsAdministrator or Supervisor Password Exiting from the Setup Utility program Selecting a startup deviceSelecting a temporary startup device Changing the startup device sequenceUser Guide System program Updating flashing Bios from a disketteAppendix A. Updating system programs User Guide Cleaning a mouse with a ball Appendix B. Cleaning the mouseCleaning an optical mouse 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 41T3715