Lenovo T40 manual Enabling Extended Channel Mode

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Access Point that is Wi-Fi compliant or in Ad Hoc mode, this device will operate in its authorized modes in all geographies.

Please reconfigure selected frequencies when you travel from one country to another.

Enabling Extended Channel Mode

The statement below regarding the extended channel mode is applicable when the system supports this function. To check the support of this function, please see the property of the installed wireless card by referring to the extended channel mode enablement instruction.

In countries other than the United States and Canada, extra IEEE 802.11b channels may be supported. If you have a problem to connect an Access Point, please contact your system administrator or check your Access Point to know which channel is used. And if the 802.11b channel is 12 or greater, you will need to enable “Extended Channel Mode” with next steps.

1.Start Windows 2000/XP. Logon with administrative privileges.

2.Right mouse click on My computer on Desktop and select Property.

3.Click on Hardware Tab and push Device Manager Button.

4.Double-click on Network Adapter, locate a wireless adapter device, right mouse click on the device and select Property.

5.Click on Advanced Tab.

6.Select “Extended Channel Mode” and set the value to “Enable”.

Note: This will be applied for systems with 802.11b wireless function supporting Extended Channel Mode.

Appendix A. Wireless related information 49

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Contents ThinkPad T40 Series Service and Troubleshooting Guide Page ThinkPad T40 Series Service and Troubleshooting Guide Page Contents Iv ThinkPad T40 Series Service and Troubleshooting Guide Conditions that require immediate action Important safety informationService General safety guidelinesPower cords and power adapters Batteries Extension cords and related devicesPlugs and outlets Heat and product ventilation Additional safety information CD and DVD drive safetyTo Connect Xii ThinkPad T40 Series Service and Troubleshooting Guide Important safety information Laser compliance statement Important safety information Xvi ThinkPad T40 Series Service and Troubleshooting Guide Information about hard disk capacity Important notice for usersImportant regulatory notice for users Xviii ThinkPad T40 Series Service and Troubleshooting Guide Xix Finding information with Access IBMXx ThinkPad T40 Series Service and Troubleshooting Guide Overview of your new ThinkPad computer Front view Rear view Your ThinkPad at a glanceFeatures Features Specifications Carry your computer properly Important tips Be careful about where and how you workCaring for your ThinkPad computer Be gentle with your computerOther important tips Take care in setting passwordsHandle storage media and drives properly Cleaning your computer keyboard Cleaning the cover of your computerCare for the fingerprint reader Cleaning your computer displayCaring for your ThinkPad computer Solving computer problems Click PC-Doctor Diagnosing problemsTroubleshooting Error messagesSolving computer problems Solving computer problems Solving computer problems Select Security -IBM Predesktop Area -Access IBM Predesktop Solution Errors without messagesProblem My screen goes blank while the computer is on Keyboard problems Password problemPower switch problem UltraNav problems Standby or hibernation problems Solving computer problems For Windows NT Solution For WindowsClick the Device Manager tab Clear the Auto insert notification check boxSelect Timer Wake with Battery Operation by pressing Enter For Windows XP or Windows Computer screen problemsClick Power Management Click the Enable hibernation buttonClick Advanced For Windows XP and WindowsBattery problems Startup problem Hard disk drive problemsSolving computer problems Fingerprint authentication problems Other problems Computer can not play a CD, or the sound quality is not good Playback of DVD is not smooth in Windows 98 and Windows Solution Problem Starting Bios Setup Utility For ThinkPad T41/41p Series computer Recovering pre-installed softwareFor other ThinkPad T40 Series computer Double-clickRecover to factory contentsHandling a hard disk drive Upgrading the hard disk driveUpgrading the hard disk drive Replacing the battery Replacing the battery Replacing the battery Getting help and service Getting help on the Web Calling the Customer Support Center Getting help and serviceFRU Getting help around the world Usage environment and your health Appendix A. Wireless related informationWireless interoperability Authorized Operation Within the United States and Canada Enabling Extended Channel Mode ThinkPad T40 Series Service and Troubleshooting Guide Part 1 General Terms Appendix B. Warranty informationLenovo Statement of Limited Warranty What this Warranty CoversWhat Lenovo Will Do to Correct Problems What this Warranty Does not CoverHow to Obtain Warranty Service Your Additional Responsibilities Exchange of a Machine or PartGoverning Law Limitation of LiabilityPart 2 Country-unique Terms Uruguay MexicoParaguay PeruCAMBODIA, INDONESIA, and Laos United StatesAsia Pacific Australia Cambodia and LaosIndia PEOPLE’S Republic of China PRC JapanMalaysia NEW ZealandEUROPE, Middle EAST, Africa Emea SingaporeGoverning Law Arbitration The following is added under this heading Consumers European Union EUThinkPad T40 Series Service and Troubleshooting Guide France Following Terms Apply to the Country Specified AustriaEgypt Ireland GermanyHungary Slovakia Items for Which Lenovo is Not LiableUnited Kingdom Warranty Period Part 3 Warranty InformationTypes Customer Carry-In or Mail-In Service Customer Replaceable Unit ″CRU″ ServiceOn-site Service Courier or Depot ServiceCRU and Customer Carry-In or Mail-In Service CRU and On-site ServiceCRU and Courier or Depot Service Country or Region Telephone Number Country or Region Telephone Number Guarantee supplement for Mexico ThinkPad T40 Series Service and Troubleshooting Guide IBM Appendix C. Customer Replaceable Units CRUsThinkPad T40 Series Service and Troubleshooting Guide Appendix D. Notices Electronic emissions notices Television output noticeEuropean Union EMC Directive conformance statement Industry Canada Class B emission compliance statementEnvironmental notices for Japan Disposing of a disused lithium batteryHandling a disused ThinkPad battery pack IBM Lotus Software Offer European Countries U. S. Or CanadaLatin American Countries Asia Pacific Countries TrademarksThinkPad T40 Series Service and Troubleshooting Guide Index ThinkPad T40 Series Service and Troubleshooting Guide Page Part Number 39T2332
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T40 specifications

The Lenovo ThinkPad T40 is a highly regarded laptop that has made a significant impact in the business and personal computing markets since its release in the early 2000s. Known for its durability, performance, and practicality, the T40 is a part of the ThinkPad series, which has a storied history of meeting the demands of professionals and everyday users alike.

One of the standout features of the T40 is its robust design. The laptop features a magnesium alloy casing that provides superior protection against everyday wear and tear. This durability is complemented by its spill-resistant keyboard, which is designed to protect the internal components from accidental liquid spills, a common concern for mobile users.

At the heart of the T40 is an Intel Pentium M processor, which was built to deliver excellent performance while being energy efficient. This was particularly advantageous for users who needed to work on the go, as it allowed for better battery life compared to traditional desktop CPUs. The T40 offers a variety of processor options, ranging from the 1.3 GHz to the 1.6 GHz Pentium M processor, each delivering a good balance of speed and efficiency.

The display is another key characteristic of the T40, featuring a 14.1-inch screen with options for both 1024x768 and higher resolutions. The LCD panel provides good color reproduction and clarity, making it suitable for both office tasks and multimedia consumption. Additionally, the T40 has a built-in trackpoint and a touchpad, offering users multiple input methods for flexibility in navigation.

For connectivity, the T40 is equipped with a range of ports, including USB 2.0, Ethernet, and a PC Card slot, allowing for easy connection to various peripherals and networks. It also supports Wi-Fi, providing users with the ability to connect to wireless networks seamlessly.

Storage options for the T40 include both traditional hard drives and, in some models, solid-state drives, which offer faster data access speeds and improved reliability. The laptop supports a maximum of 2GB of RAM, which, while modest by today’s standards, was sufficient for most business applications during its time.

In summary, the Lenovo ThinkPad T40 is a remarkable combination of durability, performance, and practicality. Its well-rounded features, from its reliable processors to its sturdy build quality, have solidified its place as a respected choice among portable laptops for professionals and casual users alike. Despite being an older model, its legacy continues to be appreciated for the standards it set in mobile computing.
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