A device for attaching a tablet computer to the rear-side of a vehicle seat part has a carrier element (4, 10, 40′, 40″, 140) which is displaceably connected to a fastening device (2, 2a, 3a, 3b, 3c, 20, 20a, 30b, 30′, 130b, 30c, 130c) and to which a support (5, 50, 50′, 50″) is displaceably connected for receiving the tablet computer (6, 60). The support (5, 50, 50′, 50″, 59, 150) can be moved between a first user position in which the screen (6a, 60a, 60a′, 60a″) of the tablet computer (6, 60) is arranged on the side opposite the vehicle seat part (1a, 1b, 1c, 1c′, 1c″, 10a, 10a′, 10b, 10c) and aligned essentially vertically and a second user position in which the screen (6a, 60a, 60a′, 60a″) is oriented upward and essentially horizontally or oblique to the user.