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Lenovo 20AA000BUS, T431s, 20AA000MUS Features, Microprocessor, Memory, Storage device, Display

Models: 20AA T431s 20AA000MUS 20AA000BUS

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Features

This topic lists the features of your computer.

Microprocessor

To view the microprocessor information of your computer, do the following:

•For Windows 7: Click Start, right-click Computer, and click Properties.

•For Windows 8: From the desktop, move the cursor to the top-right or bottom-right corner of the screen to display the charms. Then click Settings ➙ PC info.

Memory

Double data rate 3 low voltage synchronous dynamic random access memory (DDR3 LV SDRAM)

Storage device

•2.5-inch hard disk drive with a height of 7 mm (0.28 inch) or 9 mm (0.35 inch)

•2.5-inch solid-state drive with a height of 7 mm (0.28 inch)

•M.2 solid-state drive for cache only (on some models)

Display

Color display with the thin-film transistor (TFT) technology.

•Size: 355.60 mm (14 inches)

•Resolution:

–LCD: 1600 x 900

–External monitor: up to 2560 x 1600

•Brightness control

•Camera

•Microphones

Chapter 1. Product overview 9

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Lenovo 20AA000BUS, T431s, 20AA000MUS manual Features, Microprocessor, Memory, Storage device, Display

Contents

User Guide Safety, Warranty, and Setup Guide Regulatory Notice Contents Replacing devices Appendix F. EurAsia Compliance Mark Iv User Guide Protect yourself from the heat that your computer generates Read this firstPrevent your computer from getting wet Protect the cables from being damagedProtect your computer and data when moving it Important safety informationHandle your computer gently Carry your computer carefullyService and upgrades Safety guidelinesConditions that require immediate action Power cords and power adapters Extension cords and related devices Power supply statementPlugs and outlets Built-in rechargeable battery notice General battery noticeExternal devices Heat and product ventilation Lithium coin cell battery noticeElectrical current safety information Additional safety information Using headphones or earphonesLiquid crystal display LCD notice Xiv User Guide Product overview Locating computer controls, connectors, and indicatorsFront view Camera Power buttonMicrophones Fingerprint reader on some modelsMini DisplayPort connector Always On USB 3.0 connectorRight-side view Fan louversEthernet connector Power connectorLeft-side view Security keyholeBottom view Rear view Status indicatorsSpeaker-mute indicator Fn Lock indicatorMicrophone-mute indicator Camera status indicatorMachine type and model information Locating important product informationFCC ID and IC Certification information Microprocessor FeaturesMemory Storage deviceSpecifications Operating environment Accessing Lenovo programs on the Windows 7 operating systemLenovo programs Program Icon name Accessing Lenovo programs from Control PanelAccessing Lenovo programs on the Windows 8 operating system Lenovo program overview Lenovo Solution Center Lenovo SettingsPassword Manager Power ManagerSystem Update Frequently asked questions Using your computerRegistering your computer Can I get my user guide in another language?Is getting connected in different locations a challenge? How can I use the battery power more effectively?How do I attach or replace a device? Function keys Special keysWindows key Using the ThinkPad pointing deviceChanging the cap Customizing the ThinkPad pointing deviceChecking the battery status Power managementCharging the battery Using the ac power adapterMaximizing the battery life Connecting the ac power adapterPower-saving modes Managing the battery powerSelect Power off display Sleep HibernationClick Administrative Tools Connecting to the networkClick the Global Power Settings tab Ethernet connectionsWireless LAN Wireless connectionsTips for using the wireless LAN feature Wireless WANUsing Bluetooth Establishing a wireless connectionBluetooth Click Hardware and Sound Click Devices and PrintersSelect Send To Bluetooth Devices Checking the wireless network connection statusAccess Connections gauge Access Connections status iconEnabling or disabling the wireless features Using an external monitorAccess Connections wireless status icon Setting the monitor type Connecting an external monitorSet Resolution Click Advanced Settings Using the Extend desktop function Changing display settingsConsiderations for using the Extend desktop function Considerations for attaching an external monitorUsing audio features Setting up a presentationConfiguring for sound recording Using the cameraConfiguring camera settings Then click Hardware and Sound Realtek HD Audio ManagerInserting a media card Using a media cardRemoving a media card You and your computer Accessibility and comfortErgonomic information Comfort Accessibility informationTravel tips Traveling with your computerAssistive technologies Screen-reader technologiesTravel accessories Passwords and sleep mode Using passwordsTyping passwords SecurityHard disk passwords Power-on passwordSetting a power-on password Select Power-on PasswordSelect Hard Disk 1 Password or Hard Disk 2 Password Setting a hard disk passwordChanging or removing a hard disk password Supervisor passwordSelect Supervisor Password Setting, changing, or removing a supervisor passwordHard disk security Using Windows BitLocker Drive EncryptionSetting the security chip Setting the security chipEncryption Enrolling your fingerprint Using the fingerprint readerSwiping your finger over the reader Maintaining the fingerprint reader Protecting data against viruses Using firewallsSecurity User Guide Recovery overview for the Windows 7 operating system Recovery overviewCreating and using a recovery media Creating recovery mediaPerforming a backup operation Performing backup and recovery operationsPerforming a recovery operation Using the Rescue and Recovery workspaceClick the Restore your system from a backup icon Rescue files from your hard disk drive or from a backupUsing a rescue medium Creating and using a rescue mediumCreating a rescue medium Solving recovery problems Reinstalling preinstalled programs and device driversReinstalling preinstalled programs Reinstalling preinstalled device driversResetting your computer to the factory default settings Recovery overview for the Windows 8 operating systemRefreshing your computer Advanced startup optionsRecovery overview User Guide Select Disable Built-in Battery Disabling the built-in batteryReplacing devices Static electricity preventionInstalling or replacing the SIM card Replacing the base cover assembly Replacing the hard disk drive or solid-state drive Replacing devices Replacing a memory module Replacing an M.2 wireless LAN card User Guide Replacing devices Replacing an M.2 wireless WAN card Replacing devices User Guide Replacing the backup battery Replacing the keyboard Replacing devices User Guide Replacing devices User Guide Replacing devices User Guide Finding ThinkPad options Enhancing your computerThinkPad port replicators and docking stations Front view Enhancing your computer Power connector Connect the ac power adapter Enhancing your computer Attaching a ThinkPad port replicator or docking station Enhancing your computer Detaching a ThinkPad port replicator or docking station Security feature Using the system lock key Installing a new operating system Advanced configurationBefore you begin Select UEFI/Legacy Boot Installing the Windows 7 operating systemInstalling the registry patches for Windows Installing the Windows 7 fix modulesInstalling the driver for USB 3.0 for Windows Installing the Windows 8 operating systemSelect Startup Boot Installing the Windows 8 fix modulesThinkPad Setup Installing other drivers and software for WindowsClick Change display settings Click Advanced Settings Click PropertiesMain menu Config menuMenu item Submenu item Value Comments Network USB Keyboard/Mouse Maximize Performance Ahci Security menu Date and Time menuMenu item Submenu item Value Comments Password Bios ROM Uefi Bios Startup menu Standard ModeChanging the startup sequence Restart menu Network BootUsing system management Updating your system Uefi BiosSystem management Network Boot sequence Setting management featuresAsset ID Eeprom Flash update General tips for preventing problems Preventing problems109 Making sure device drivers are current Getting the latest drivers using System UpdateGetting the latest drivers from the Web site Taking care of your computer Be careful about where and how you workBe gentle with your computer Carry your computer properlyTake care in setting passwords Cleaning the cover of your computerCare for the fingerprint reader Register your computer Be sure not to modify your computerCleaning your computer display Cleaning your computer keyboardUser Guide Diagnosing problems Troubleshooting computer problemsTroubleshooting Computer stops respondingSpills on the keyboard Error messagesIf you spill something on your computer Troubleshooting computer problems Errors without messages Memory module problems Beep errorsEthernet problems Networking problemsSolution Wireless LAN problem Problems with the keyboard and other pointing devicesWireless WAN problem Bluetooth problemsKeyboard problems Problems with the display and multimedia devicesComputer screen problems Click KeyboardClick Advanced Settings External monitor problemsClick Advanced Settings Set Resolution Click Hardware and Sound Audio problemsDouble-clickSound, video and game controllers Battery and power problems Fingerprint reader problemsBattery problems Power problems An ac power adapter problemBoot problems Power button problemSleep and hibernation problems Hard disk drive problems Problems with drives and other storage devicesProblems with ports and connectors Software problemSolid-state drive problem USB problemUser Guide Before you contact Lenovo Getting supportUsing diagnostic programs Getting help and serviceLenovo Support Web site Calling LenovoTelephone numbers Purchasing additional servicesUser Guide Wireless interoperability Wireless related informationAppendix A. Regulatory information 137Usage environment and your health Locations of the UltraConnect wireless antennasExport classification notice Locating wireless regulatory noticesElectronic emission notices Federal Communications Commission Declaration of ConformityGerman Class B compliance statement Appendix A. Regulatory information User Guide Important Weee information Appendix B. Weee and recycling statementsJapan recycling statements 143Recycling information for Brazil Battery recycling information for the European UnionDisposing of Lenovo computer components Appendix B. Weee and recycling statements User Guide Click Hardware and Sound Device Manager Appendix C. Energy Star model information147 Click OK 149 Appendix D. NoticesTrademarks Ukraine RoHS China RoHS Turkish RoHS151 India RoHS 153 Appendix F. EurAsia Compliance MarkUser Guide Page Part Number 1P P/N