Want a way to give presentations without a mess of surplus cables? The Optoma EH461 projector will answer all of your problems with its wireless pairing feature. Simply turn it on, select a source device (usually your mobile phone), and start presenting. However, if the cables don't bother you, you can still always connect it to your computer. The cables won't interfere with the sound in any way, as the Optoma EH461 uses an integrated 10W speaker instead of an external speaker.