10 Getting StartedSerial PortExpansion Bus Connector( “Port Replicator”)( “External Display”)Use this jack to connect head-phones or amplifier-equippedspeakers. Audio output from theinternal speaker is disabled whenheadphones or external speakersare connected.Headphone Jack( “RAM Module”)SpeakerTo adjust the volume:Fn + F5 / Fn + F6Speaker on/off : Fn + F4RAM Module SlotSecurity LockA Kensington cable can be connected.For more information, read the manual that comes with the cable.LOCKExternal Display PortParallel PortNOTEWhen using an external microphone, do not removethe check mark for “Mute” under “Microphone Bal-ance” of the Volume Control dialog box and do notincrease the playback volume. Howling may result.Howling may occur in the same way when discon-necting an external microphone. (The microphone of“Volume Control” is in the state of mute at the time offactory shipment. This is not shown at the time offactory shipment.)CAUTIONDo not allow metallic objects or magnetic mediato come near the speaker on the bottom surfaceof the computer.• Because the speaker contains a magnet, metalobjects may become attached to the bottomsurface of the computer. This may cause thecomputer to be unstable, or may mark the sur-face of the desk on which it is sitting.• If floppy disks, magnetic memory cards, or othermagnetic media approach the speaker, there isa risk that data will be destroyed.Names and Functions of PartsCAUTIONDo not cover the computer with a thick cloth, such as a blanket.( “USB Devices”)Depending on the shape of the plug, some USB devicescannot be connected to the USB port. In this case, use acommercially-available USB extension cable.USB PortUse only a monaural condenser microphone (miniature jack).Using an input source other than a monaural condenser mi-crophone may not allow audio to be input or may damage theequipment.Microphone Jack( “Printer”)