The Home Theatre System has a USB 2.0 Hi-speed connector. This enables you to enjoy video and audio contents from your thumbdrive and Hard Disk. The storage media should be formatted in FAT32. The Home Theatre System does not support NTFS file system. Some of the portable Hard Disk requires an additional power source to get it working. If there are no files detected or if there is no video ouput when you play the media clips from your USB device, please check the supported codecs from the Home Theatre System user manual.