Lenovo 8420, 8426, 8421, 8145, 8142, 8141, 8095, 8096 manual Specifications

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Specifications

This section lists the physical specifications for your computer.

Dimensions

Height: 146 mm (5.7 in.)

Width: 442 mm (17.4 in.)

Depth: 401 mm (15.8 in)

Weight

Minimum configuration as shipped: 24 lb (11 kg)

Maximum configuration: 31 lb (14 kg)

Environment

Air temperature:

System on: 10° to 35°C (50° to 95° F)

System off: 10° to 43°C (50° to 110° F)

Maximum altitude: 914 m (3000 ft)

Note: The maximum altitude, 914 m (3000 ft), is the maximum altitude at which the specified air temperatures apply. At higher altitudes, the maximum air temperatures are lower than those specified.

Humidity:

System on: 8% to 80%

System off: 8% to 80%

Electrical input

Input voltage:

Low range:

Minimum: 100 V ac

Maximum: 127 V ac

Input frequency range: 50–60 Hz

Voltage switch setting: 115 V ac

High range:

Minimum: 200 V ac

Maximum: 240 V ac

Input frequency range: 50–60 Hz

Voltage switch setting: 230 V ac

Input kilovolt-amperes (kVA) (approximate):

Minimum configuration as shipped: 0.09 kVA

Maximum configuration: 0.32 kVA

Note: Power consumption and heat output vary depending on the number and type of optional features installed and the power-management optional features in use.

Heat output (approximate) in British thermal units (Btu) per hour:

Minimum configuration: 256 Btu/hr (75 watts)

Maximum configuration: 1058 Btu/hr (310 watts)

Airflow

Approximately 1.13 cubic meters per minute (40 cubic feet per minute) maximum

Acoustical noise-emission values

Average sound-pressure levels:

At operator position: (0.5 meters)

Idle: 33 dBA

Operating: 35 dBA

At bystander position - 1 meter (3.3 ft):

Idle: 29 dBA

Operating: 31 dBA

Declared (upper limit) sound-power levels:

Idle: 4.3 bels

Operating: 4.4 bels

Note: These levels were measured in controlled acoustical environments according to the procedures specified by the American National Standards Institute (ANSI) S12.10 and ISO 7779 and are reported in accordance with ISO 9296. Actual sound-pressure levels in a given location might exceed the average values stated because of room reflections and other nearby noise sources. The declared sound-power levels indicate an upper limit, below which a large number of computers will operate.

4User Guide

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Contents User Guide Types 8095, 8096, 8141 Types 8145, 8420, 8421 Page User Guide Types 8095, 8096, 8141 Types 8145, 8420, 8421 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 ventilationTo connect To disconnect Additional safety informationLithium battery notice Modem safety information Laser compliance statementPower supply statement Overview Information resourcesXiv User Guide Installing options FeaturesMemory Operating systems, preinstalled varies by model type Specifications Handling static-sensitive devices Available optionsTools required Installing external options 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 memory Installing options Installing adapters What to do nextWhat to do next Installing internal drives Drive specificationsInstalling a drive User Guide Connecting the first optical drive Installing security features Connecting a serial ATA hard disk drivePadlock loop Password protectionChanging the battery User Guide Erasing a lost or forgotten password clearing Cmos Replacing the cover and connecting the cablesUser Guide Using the Setup Utility program Starting the Setup Utility programViewing and changing settings Using passwordsUser password Administrator passwordIDE Drive User Password IDE Drive Master PasswordSelecting a startup device Setting, changing, and deleting a passwordUsing Security Profile by Device Changing the startup sequence Exiting from the Setup Utility programSelecting a temporary startup device Updating flashing Bios from a diskette Updating flashing Bios from your operating systemAppendix A. Updating system programs System programsRecovering from a POST/BIOS update failure Click Continue Click Downloads and driversCleaning 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 19R0462