Lenovo 43R8770 - Enhanced USB Port Replicator User Manual

Contents

Auto-adjust the external monitor occasionally to realign its settings with the video output of the USBPort Replicator. This action fixes most of the issues related to the quality of the video on the externalmonitor. Refer to your notebook computer user's guide for instructions on the auto-adjust procedure.4. The external monitor connected through the USB Port Replicator is flickering.Flickering is usually associated with CRT monitors using a low refresh rate. Always try and use themaximum refresh rate available:v In the Extended mode, increase the refresh rate of the external monitor.v In the Mirror mode, increase the refresh rate of your notebook computer screen, which in turnincreases the refresh rate of the external monitor.For more information about the supported refresh rates, see “Adjusting Video Settings” on page 10.5. You cannot use ThinkVantage ®Presentation Director to change your ThinkPad ®display settingswhen you attach external monitors on both USB Port Replicator VGA port and ThinkPad VGAport.ThinkVantage Presentation Director cannot be used for ThinkPad display settings when the USB PortReplicator connected. To set up the display property for multiple external monitor, do the following:v To change the display settings of the external monitor attached on USB Port Replicator, click theUSB Port Replicator icon in system tray and set up in the popup setting menu.v To change the display settings of the external monitor attached on ThinkPad VGA port, do one ofthe following:– For Windows Vista, right-click the blank area on the desktop, click Property to open the Displayproperties window and set up there.– For Windows XP, right-click the blank area on the desktop, click Personalize to open the Displayproperties window and set up there.AudioYou cannot hear anything through your notebook computer speakers or you cannot use Microphone-inport or audio-out port on the notebook computer.Lenovo notebook computers default to the USB audio when the USB Port Replicator is connected,disabling your notebook computer built-in speakers and audio ports.To enable your notebook computer built-in speakers and audio ports:1. Open the Control Panel, select Sounds > Audio Devices .2. Do one of the following:v For Windows Vista,– Select the Playback tab, and then select a device that is not USB Audio.– Select the Recording tab, and then select a device that is not USB Audio.v For Windows XP, select the Audio tab, and then, under Sound Playback and Sound Recording,select a device that is not USB Audio.Note: To enable this change, close the application currently using the audio device and restart it.14 Lenovo Enhanced USB Port Replicator User's Guide