Using the Nvidia Optimus Graphics feature | Lenovo 23539KU specs

To change the resolution and color quality for each monitor, do the following:

1.Right-click on the desktop, and click Screen resolution.

2.Click the monitor-1 icon (for the primary display, the computer display).

3.Set the resolution for the primary display.

4.Click the monitor-2 icon (for the secondary display, the external display).

5.Set the resolution for the secondary display.

6.Click Advanced settings and set up the color quality on the Monitor tab.

7.Click OK to apply the changes.

Using the NVIDIA Optimus Graphics feature

Some ThinkPad notebook computers support the NVIDIA Optimus Graphics feature.

To achieve the best balance between the computer performance and a long battery life, depending on the graphics quality demand of the running application and the settings of the power plan you use, the NVIDIA Optimus Graphics feature automatically switches between High Performance Graphics and Energy Saving Graphics with no need to restart your computer, close applications, or intervene manually.

Note: The NVIDIA Optimus Graphics feature is only supported on Windows 7 operating system.

Using audio features

Your computer is equipped with the following:

•Combo audio jack, 1/8 inch (3.5 mm) in diameter

•Built-in speakers

•Built-in microphones

Your computer also has an audio chip that enables you to enjoy various multimedia audio features, such as the following:

•Recording and playback of PCM and WAV files

•Playback of MIDI and MP3 files

•Recording from various sound sources, such as a headset attached

The following table shows which functions of the audio devices attached to the jacks on your computer or docking station are supported.

Table 3. Audio feature list

Jack	Headset with a 3.5 mm	Conventional headphone	Conventional microphone
	4-pole plug

Combo audio jack	Headphone and	Headphone function	Not supported
	microphone functions	supported
	supported

Headphone jack of the	Only headphone function	Headphone function	Not supported
docking station	supported	supported
	Microphone function not
	supported

Microphone jack of the	Not supported	Not supported	Microphone function
docking station			supported

40User Guide

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Lenovo 23539KU manual Using the Nvidia Optimus Graphics feature, Using audio features

Contents

User Guide Safety, Warranty, and Setup Guide Regulatory Notice First Edition May Copyright Lenovo Contents Replacing devices Appendix B. Weee and recycling statements Iii Iv User Guide Prevent your computer from getting wet Read this firstProtect yourself from the heat that your computer generates Protect the cables from being damaged Handle your computer gently Important safety informationProtect your computer and data when moving it Carry your computer carefully Conditions that require immediate action Safety guidelinesService and upgrades Vii Viii User Guide Power cords and power adapters Extension cords and related devices Plugs and outlets Power supply statementExternal devices General battery notice Rechargeable battery notice Lithium coin cell battery notice Heat and product ventilation Xiii Electrical current safety information Laser compliance statement Additional safety information Using headphones or earphonesLiquid crystal display LCD notice Do not connect phone line while using tablet mode Product overview Locating computer controls, connectors, and indicatorsFront view Integrated camera on some models Power buttonBuilt-in microphones on some models ThinkLight light Security keyhole Wireless radio switchRight-side view Serial Ultrabay Slim bay Fan louvers USB 3.0 connectorLeft-side view Combo audio jack Bottom view PCI Express Mini Card slot for wireless LAN/WiMAXSmart card slot Rear View Mini DisplayPort connector or Thunderbolt connector Power jackEthernet connector Always On USB connector Wireless LAN/WAN/WiMAX/Bluetooth status indicator Status indicatorsSystem-status indicators Device access status indicator Locating important product information Power status indicatorsBattery status Machine type and model label FCC ID and IC Certification number label Features Certificate of Authenticity label User Guide Specifications Operating environment ThinkVantage programs Accessing ThinkVantage programsAccessing programs from Control Panel Program Icon name Introduction to ThinkVantage programs Access ConnectionsProgram Control Panel section Green text in Control Panel Password Manager Client Security SolutionLenovo Solutions Center Active Protection System Rescue and Recovery Power ManagerRecovery Media System Update User Guide Frequently asked questions Using your computerRegister your computer Is getting connected in different locations a challenge? Need to attach or replace a device? Enabling or disabling the wireless features Fn+F5 Power conservation Fn+F4Switching a display output location Fn+F7 Special keys and buttons Multimedia controls Changing the camera and audio settings Fn+F6Adjusting the brightness level of the computer display Other functions Setting the volume Volume and mute buttonsSetting the microphone mute button Windows key Using the UltraNav pointing deviceWindows key Customizing the TrackPoint pointing device Using the TrackPoint pointing deviceClick Start Control Panel Hardware and Sound Mouse UltraNav Using the touch pad Changing the cap Checking battery status Power managementAdding the UltraNav icon to the system tray Connecting the ac power adapter Using the ac power adapterCharging the battery Tips on using the ac power adapter Managing your battery power Maximizing battery lifePower-saving modes Enabling the battery alarm Handling the batteryWireless off Click the Global Power Settings tab Using your computer Wireless LAN Connecting to the networkWireless connections Wireless WAN Tips for using the wireless LAN feature Establishing wireless LAN connectionsEstablishing wireless WAN connections Wireless network setup Checking wireless connection status Using BluetoothUsing WiMAX Select Send To Bluetooth Devices Access Connections icon and wireless status icon Enabling or disabling the wireless feature Changing display settingsConnecting a projector or external display Presentations and multimedia Set Resolution Click Advanced Settings Connecting an external monitorSetting the monitor type Considerations for attaching an external monitor Select Multiple Displays Using the DVI monitorConsiderations for attaching a DVI monitor Using the Mini DisplayPort connector Setting up a presentationUsing the Extend desktop function Using the Thunderbolt connector Using the Nvidia Optimus Graphics feature Using audio features Configuring camera settings Using an integrated cameraUsing the optical drive Adjusting the video output quality of your camera Using an ExpressCard, a flash media card, or a smart card MultiBurner drive Using your computer User Guide You and your computer Accessibility and comfortErgonomic information Accessibility information Comfort Travel tips Travel accessoriesTraveling with your computer Assistive technologies User Guide Typing passwords Using passwordsPasswords and sleep mode Security Setting a power-on password Power-on passwordHard disk passwords Select Power-on Password Setting a hard disk password Select Hard Disk 1 Password Supervisor password Changing or removing a hard disk password Setting, changing, or removing a supervisor password Select Supervisor Password Using Windows BitLocker Drive Encryption Hard disk security Setting the security chip Setting the security chip Enrolling your fingerprint Using the fingerprint readerLED behavior of the fingerprint reader Logging on to the system Swiping your finger over the readerLED behavior Description Setting the fingerprint reader Care for the fingerprint reader Security Using and understanding firewalls Protecting data against viruses Creating and using recovery media Recovery overviewCreating recovery media Using recovery media Performing backup and recovery operationsPerforming a backup operation Click the Restore your system from a backup icon Using the Rescue and Recovery workspacePerforming a recovery operation Rescue files from your hard disk drive or from a backup Using a rescue medium Creating and using a rescue mediumCreating a rescue medium Reinstalling preinstalled applications Reinstalling preinstalled applications and device driversReinstalling preinstalled device drivers Solving recovery problems Replacing devices Replacing the batteryStatic electricity prevention User Guide Replacing a memory module User Guide Replacing devices Replacing the hard disk drive or solid state drive Replacing devices Replacing the keyboard To remove the keyboard, do the following Replacing devices To install the keyboard, do the following Replacing devices User Guide Replacing devices User Guide Replacing devices To replace a PCI Express Mini Card with three connectors Remove the screw Card pops up Remove the card User Guide Before you start, print these instructions User Guide Replacing devices User Guide Replacing devices User Guide Replacing devices Replacing the Serial Ultrabay Slim device Replacing the SIM card Replacing devices Replacing the backup battery Replacing devices User Guide Finding ThinkPad options Enhancing your computerPerforming a warm-swap operation Lift up the stopper on the hard disk drive adapter Enhancing your computer ThinkPad docking stations and port replicators Inserting the secondary hard disk drive adapter into the bay Front view User Guide Rear view User Guide Attaching a ThinkPad port replicator or docking station User Guide Enhancing your computer Security feature Detaching a ThinkPad port replicator or docking station Using the system lock key User Guide Before you begin Advanced configurationInstalling a new operating system 111 Installing the registry patches for Windows Installing Windows 7 operating systemSelect UEFI/Legacy Boot Installing the Windows 7 update module package Click Change display settings Click Advanced Settings Installing device driversInstalling the driver for the 4-in-1 media card reader Click Update Driver Installing other device drivers and software ThinkPad SetupMain menu Menu item Submenu item Value Comments Network Config menuMAC address Internal LAN AC only Disabled EnabledFor Legacy Only boot Menu item Submenu item Value Comments Display Menu item Submenu item Value Comments Keyboard/MouseBoth ThinkPad LCD Disabled No runtime PowerBattery Optimized Always Battery Optimized Beep and Alarm Automatic Intel AMT Menu item Submenu item Value Comments Serial ATA SataVT100+ Date/Time menu Menu item Submenu item Value Comments PasswordSecurity menu Internal FingerprintExternal Enter Update Option Bios ROM String Reporting Bios text stringSmbios Reporting Smbios data Protection Enabled Menu item Submenu item Value Comments Port Access Anti-Theft Startup menu Changing the startup sequence Restart menu Preboot eXecution Environment Updating your system Uefi BiosUsing system management System management Wake on LAN Setting management featuresNetwork Boot sequence Asset ID Eeprom Flash update User Guide General tips for preventing problems Preventing problems131 Getting the latest drivers from the Web site Getting the latest drivers using System UpdateMaking sure device drivers are current Click Downloads and drivers Be gentle with your computer Be careful about where and how you workTaking care of your computer Carry your computer properly Take care in setting passwords Cleaning the cover of your computerRegister your computer Be sure not to modify your computer Cleaning your computer keyboard Cleaning your computer display User Guide Troubleshooting Troubleshooting computer problemsDiagnosing problems Computer stops responding Spills on the keyboard Error messagesIf you spill something on your computer Troubleshooting computer problems User Guide Errors without messages Ethernet problems Beep errorsMemory problems Problem Solution Wireless LAN problem Solution UltraNav problems Wireless WAN problemBluetooth problems Keyboard and other pointing devices Display and multimedia devices Keyboard problemsComputer screen problems Click Keyboard External monitor problems Click Start Control Panel Click Hardware and Sound Audio problemsDouble-clickSound, video and game controllers Fingerprint reader problems Battery problems Battery and powerAC power adapter problems Power button problem Power problemsStartup problems Sleep and hibernation problems Optical drive problems Hard disk drive problemsSolid state drive problems Drives and other storage devices Software problems Ports and connectors USB problem Docking station or port replicator problem Getting support Getting help and serviceBefore you contact Lenovo Lenovo Support Web site Using diagnostic programsCalling Lenovo Purchasing additional services Telephone numbers User Guide Appendix A. Regulatory information Wireless related informationWireless interoperability 159 Usage environment and your health Location of the UltraConnect wireless antennasType 1 Antenna location Locating wireless regulatory notices Type 2 Antenna location Federal Communications Commission Declaration of Conformity Export classification noticeElectronic emissions notices Industry Canada Class B emission compliance statement German Class B compliance statement Korea Class B compliance statement User Guide Japan recycling statements Appendix B. Weee and recycling statementsEU Weee statements 165 Recycling information for Brazil Battery recycling information for TaiwanDisposing of Lenovo computer components Battery recycling information for the European Union User Guide Appendix C. Energy Star model information Power plan Energy Saver settings when plugged into ac power169 Click OK Appendix D. Notices 171 Trademarks Page Part Number 1P P/N