A single cable (no housing or power cable to be more) that connects the MHL micro USB compatible phone with the HDMI television. Must be supplied with all the USB (which can plug into the USB on the TV if it has one) which also charges the phone. I have not been able to test on a compatible TV MHL, which theoretically makes the use of the optional USB power since made by HDMI. Works perfectly with Galaxy S4, both portrait and landscape modes are managed automatically on the TV screen. The cable length is also an asset.