This compact transmitter uses HDBaseT technology to extend your HDMI signal up to 230 feet (70 meters) over a single CAT5e or CAT6 cable to an HDBaseT display projector or receiver (sold separately). The transmitter supports Ultra HD and Full HD video resolutions (4K and 1080p) with support for the accompanying digital 7.1 audio.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Easy and discreet installation&lt;/b&gt;&lt;br /&gt;For a simple and tidy installation the HDBaseT transmitter features a small footprint and a built-in HDMI cable that connects directly to your video source reducing clutter by eliminating the need for an HDMI cable at your local source. The transmitter is powered using USB which means you can use a USB port on your source device to power the transmitter which is perfect for extending from areas where power outlets may be limited.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Use your own HDBaseT display projector or receiver&lt;/b&gt;&lt;br /&gt;The compact transmitter works seamlessly with other HDBaseT equipment such as HDBaseT displays projectors and receivers. The simplicity and versatility of this compact transmitter make it the ideal solution for transmitting an HDBaseT signal to a boardroom or classroom projector enabling presenters in your office to quickly connect their laptop computer and share presentations or data sheets.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Seamless integration with your existing infrastructure&lt;/b&gt;&lt;br /&gt;This transmitter extends HDMI and 7.1 surround sound over a single cable unlike some HDMI extenders that require two cables and only offer minimal audio support. Extending HDMI with one cable reduces potential failure points while also lowering your cost in cabling. &lt;br /&gt;&lt;br /&gt;Plus because the HDBaseT transmitter uses standard network cables it works with existing Ethernet infrastructures. This makes it the perfect solution for deploying digital signage in large buildings such as shopping centers stadiums schools or hospitals.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Astonishing 4K picture quality from an impressive distance&lt;/b&gt;&lt;br /&gt;With high-quality HDMI cables beginning signal degradation at 30 feet it can be difficult to maintain the brilliance of 4K video even at shorter distances. But with HDBaseT youll be amazed at how your Ultra HD picture four times the resolution of high-definition 1080p is just as brilliant even at distances up to 130 feet from your video source.&lt;br /&gt;&lt;br /&gt;Even if you&#39;re not running 4K HDBaseT supports High-Definition 1080p and lower resolutions at even greater distances up to 230 feet from your source giving you piece of mind to know that this extender will comfortably work with any HDMI video source and display.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;What is HDBaseT?&lt;/b&gt;&lt;br /&gt;HDBaseT is a standardized zero-latency video distribution technology thats revolutionizing HDMI distribution. HDBaseT uses an advanced method of modulation that enables you to distribute uncompressed HDMI audio and video along with additional signals over a single Ethernet cable. Offering greater versatility than traditional HDMI extenders and longer distances than HDMI cables alone HDBaseT is the clear choice for every integrator and system designer because it can do so much with just a single cable.&lt;br /&gt;&lt;br /&gt;The ST121HDBTD is backed by a 2-year StarTech.com warranty and free lifetime technical support.