Abstract: The invention relates to a combination of a computer keyboard and an extension unit for providing user input to a computing device, e.g. a computer, wherein the keyboard comprises: a housing; buttons and/or keys held by the housing; an electronic module accommodated inside the housing to convert engagement with a button or key into coded form and to transmit the coded form to the computing device as user input, wherein the extension unit comprises: a housing; a button and/or key held by the housing; an electronic module accommodated inside the housing to convert engagement with a button or key into coded form and to transmit the coded form to the electronic module of the keyboard for further transmittal to the computing device as user input, and wherein the keyboard and the extension unit are configured to releasably attach the housing of the extension unit to the housing of the keyboard at a plurality of different locations.

Abstract: The invention relates to a combination of a computer keyboard and an extension unit for providing user input to a computing device, e.g. a computer, wherein the keyboard comprises: a housing; buttons and/or keys held by the housing; an electronic module accommodated inside the housing to convert engagement with a button or key into coded form and to transmit the coded form to the computing device as user input, wherein the extension unit comprises: a housing; a button and/or key held by the housing; an electronic module accommodated inside the housing to convert engagement with a button or key into coded form and to transmit the coded form to the electronic module of the keyboard for further transmittal to the computing device as user input, and wherein the keyboard and the extension unit are configured to releasably attach the housing of the extension unit to the housing of the keyboard at a plurality of different locations.

Abstract: The invention relates to a combination of an input device for a computing device and a set of support elements, wherein the set of support elements includes at least two support elements, wherein the combination includes fasteners to fasten any number of support elements of the set of support elements to the input device, wherein the support elements are fastenable to the input device at a location on the input device to set a tilt angle of the input device, and wherein the set of support elements is configured such that a single support element can be fastened to the input device and such that a plurality of support elements can be fastened to the input device as a stack of support elements thereby allowing to set different tilt angles of the input device.