Lenovo 4105, 4157, 4217 manual Air circulation, Electrical outlets and cable lengths

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Air circulation

Your computer and monitor produce heat. The computer has a fan that pulls in fresh air and forces out hot air. The monitor lets hot air escape through vents. Blocking the air vents can cause overheating, which might result in a malfunction or damage. Place the computer and monitor so that nothing blocks the air vents; usually, 51 mm (2 inches) of air space is sufficient. Also, make sure the vented air is not blowing on people.

Electrical outlets and cable lengths

The location of electrical outlets, the length of power cords and cables that connect to the monitor, printer, and other devices might determine the final placement of your computer.

When arranging your workspace:

Avoid the use of extension cords. When possible, plug the computer power cord directly into an electrical outlet.

Keep power cords and cables neatly routed away from walkways and other areas where they might get kicked accidentally.

For more information about power cords, refer to the ThinkStation Safety and Warranty Guide that came with your computer.

4ThinkStation User Guide

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Contents ThinkStation User Guide Sixth Edition June Copyright Lenovo 2009 Contents Appendix B. System memory speed Appendix C. Notices Introduction IiiIv ThinkStation User Guide Important safety information ThinkStation User Guide Comfort Arranging your workspaceGlare and lighting Air circulation Electrical outlets and cable lengthsSetting up your computer Connecting your computerThinkStation User Guide Setting up your computer If you have powered speakers with an ac power adapter Turning on computer power Completing important tasks Finishing the software installationInstalling other operating systems Updating your operating systemFeatures Installing external optionsInstalling the computer on a rack shelf Updating your antivirus softwareInternal drives System management featuresInput/Output I/O features Video subsystemSoftware programs, preinstalled PowerSecurity features Operating system, preinstalledSpecifications Software provided with your Windows operating system Lenovo Solution CenterSoftware overview Software provided by LenovoLenovo ThinkVantage Toolbox PC-Doctor for Rescue and RecoverySimpleTap Adobe ReaderViewing and changing settings Using the Setup UtilityStarting the Setup Utility program Using passwordsSetting, changing, and deleting a password User PasswordAdministrator Password Enabling or disabling a deviceSelecting a startup device Advanced settingsExiting from the Setup Utility program Selecting a temporary startup deviceThinkStation User Guide Installing Sata hard disk drives Installing hard disk drives and configuring RAIDInstalling Sata hard disk drives and configuring RAID Select Devices IDE Drives Setup and press EnterInstalling SAS hard disk drives and configuring RAID Creating RAID volumesDeleting RAID volumes Installing SAS hard disk drivesEntering the Marvell Bios Setup to configure SAS RAID From the RAID Config menu, select Create arrayFrom the RAID Config menu, select Spare Management Configuring the Marvell Bios Setup to delete an arrayFrom the RAID Config menu, select Delete array Updating flashing the Bios from a disc Using system programsUpdating system programs Recovering from a POST/BIOS update failure Updating flashing the Bios from your operating systemClick Downloads and drivers Basic troubleshooting Troubleshooting and diagnosticsSymptom Action Diagnostic programs Troubleshooting and diagnostics Cleaning an optical mouse PC-Doctor for DOSTroubleshooting and diagnostics ThinkStation User Guide Creating recovery media Recovery informationCreating and using recovery media Using recovery mediaPerforming backup and recovery operations Performing a backup operationUsing the Rescue and Recovery workspace Performing a recovery operationClick the Restore your system from a backup icon Creating and using rescue media Installing or reinstalling device drivers Using rescue mediaCreating rescue media Setting a rescue device in the startup sequence Solving recovery problemsOnline Books folder Getting information, help, and serviceInformation resources Lenovo ThinkVantage ToolsUsing the documentation and diagnostic programs Safety and WarrantyHelp and service Calling for serviceUsing other services Purchasing additional services Appendix A. Manual modem commands Basic AT commandsExtended AT commands Guard tone disabled Command Function Modem ignores the DTR signalModem hangs up, returns to the Command Mode after Enable RTS/CTS hardware flow controlMNP/V.42/V.42bis/V.44 commands Fax Class 1 commandsFax Class 2 commands Voice commands Appendix B. System memory speed Dimm type and speed PC3-8500U Appendix C. Notices Television output notice European conformance CE mark TrademarksImportant Weee Information Appendix D. Weee and recycling informationRecycling information Battery recycling information for Taiwan Recycling information for BrazilBattery recycling information for the European Union ThinkStation User Guide China RoHS Ukraine RoHS Turkish RoHS India RoHS Index Lenovo Solution Center Flashing Bios Antivirus software ThinkStation User Guide Page 1P53Y4306
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