The present invention is to provide an electronic device comprising a case including one or more connections disposed on a front panel thereof, a transverse groove disposed along the front panel and above one of the connections, and a transverse rail disposed on the front panel and below one of the connections; and a sliding cover including a plurality of latches disposed on a top edge thereof, and a slide disposed on a bottom edge thereof and extended toward the connections, wherein the latches are slidably secured to the groove, the slide is adapted to slidably receive the rail for completing an assembly of the sliding cover, and the sliding cover is adapted to transversely slide along the groove for covering one of the connections or not.