4K Ultra HD Blu-ray disc provides the ultimate in audio/video quality with a stunning 4K picture and state-of-the-art audio. Pop in a 4K Ultra HD Blu-ray disc and prepare to be transported. Content created for High Dynamic Range or HDR can display an even more breathtaking picture with bolder contrast and more vibrant colors. This LG Blu-ray disc player is HDR compatible with HDR10. Have a library of choice Blu-ray discs and DVDs? Not to worry. This LG UHD Blu-ray disc player is backward compatible supporting 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 play your digital movies music and more. Just plug it in and use your remote control to navigate through your files.