Abstract: The plug connection device for mechanical and electrical plug connection of one electronic unit having a first housing (1) with another electronic unit having a second housing (2) includes an electronic plug (5) in the one unit and a socket (6) for the plug (5) in the other unit, and a mechanical locking device separate from the electronic plug (5) in the one unit. The mechanical locking device includes an operating rod or bar (7,7') slidable parallel to a wall of the one unit; at least two plate-like lock studs (10) extending inclined to the wall of the one unit and correspondingly inclined running surfaces (15) bounding lock stud recesses (13) provided in the rear wall of the other electronic unit.

Abstract: A housing for a paper shredder with a slit-like paper feed disposed on one side of the housing and a slit-like paper discharge disposed on the opposite side of the housing. The housing has an elongated shape, the dimension of length being a multiple of the dimension in width, where on each narrow side of the paper discharge support surfaces are disposed, with which the paper shredder can be placed on a waste receptacle. The width of the support surface is selected such, that one of the support surfaces is considerably larger than the width of the edge of the waste receptacle, while the other support surface has a width only negligibly greater than the width of the edge of the waste receptacle. It is additionally possible to provide a clamping device in the area of one support surface as security against sliding of the paper shredder placed on the waste receptacle.