1. A multimedia device for portable computers which consists of a first member and a second member that are openable and foldable relative to each other comprising a latch member in the folding direction of the portable computer, wherein the multimedia device is movably mounted on the first member, and is turnable to a use position when the first member and the second member are opened, the latch member being turnable to a closed position to latch the second member when the first member and the second member are moved close to each other for folding.