Saya mau tau Backward compatibility dari Cakram Blu-ray. Jelaskan dalam bahasa sunda

While it is not compulsory for manufacturers; the Blu-ray Disc Association recommends that Blu-ray Disc drives should be capable of réading standard DVDs for backward compatibility. For instance, Samsung's first Blu-ray Disc drive can réad CDs, regular DVDs, and Blu-ray Discs. All other Blu-ray Disc players reléased are also capable of DVD playback, though not all support CD playback. This includes Sony, Panasonic, Philips, LG, Pioneer and PC-based players from Alienware, Sony, and Dell.