Using the Port Replicator Making Connections To connect your audio equipment The port replicator provides the following audio ports: Amplified speaker-out connector for headphones or speakers. Line-in connector for an external audio source (such as a CD player). Microphone-in for an external microphone. 1. Attach the audio cable to the corresponding audio port. 2. Dock the OmniBook in the port replicator. You can press Fn+F7 to mute the sound. Pressing Fn+F7 again enables the sound. Line-in 1-21 Speaker-ou t Microphone-i