The CAT5x 4-Port or 8-Port AV Extender 330M Transmitter allows you to extend source computer's video and audio upon maximum 330 meter distance to one monitor or projector. With the built-in video and audio signals enhancement, you can gain the best video resolution quality and audio stereo sound comply with listening. No software is required and furthermore the installation and operation are easily more than expected. From use in extension bench facilities of video and audio, this product, CAT5x 4-Port or 8-Port AV Extender 330M Transmitter, delivers both performance and value.