Abstract: An adapter for connection to telephone lines to provide a filter for DSL connections to the telephone lines has pivoting latches that will engage existing studs on a wall mounted jack plate. The housing has a circuit board with a connector that will plug into the telephone jack on the wall mounted jack plate, and has outlet jacks for connection to remote equipment. The latches pivot between a released position wherein they clear the existing studs so that the housing can be placed against the existing wall mounted jack plate, and a latched position where the latches are held in place on the studs and the housing is supported on the existing jack plate. Studs provided on the housing replicate the position of the studs on the existing jack plate.