Apparatus for a portable electronic device, the apparatus comprising a base member, a user input interface, and a user output interface. The user output interface is configured to extend along mutually perpendicular longitudinal and lateral axes of the apparatus. The user input interface comprises a QWERTY input configured to extend parallel to the longitudinal axis. The apparatus is configured to provide a first configuration in which the user input interface is housed between the base member and the user output interface, and a second configuration in which the user input and output interfaces have been laterally slid in opposing directions with respect to the base member.