4K Ultra HD Blu-ray disc provides the ultimate in audio/video quality with a stunning 4K picture and state-of-the-art audio and no internet connection required. Content created for High Dynamic Range, or HDR, can display an even more breathtaking picture with bolder contrast and more vibrant colors. This LG device is HDR compatible with HDR10. Have a library of Blu-ray discs and DVDs? The UP870 Ultra HD Blu-ray disc player supports both of these popular legacy standards, so old favorites and new discoveries won't be left behind. The USB port here allows you to quickly, easily connect a digital storage device and share all your digital media. Just plug it in and use your remote control to navigate through your files.