Abstract: The invention relates to a device holder for mounting devices in a vehicle. Said device holder comprises at least one external rack and at least one internal rack. The at least one external rack can be mounted on the vehicle structure and has a storage space that is designed to introduce and releasably attach the at least one internal rack. The internal rack has means for forming at least one compartment that has a variable size in order to introduce and mount at least one device. The device holder according to the invention can be particularly well adjusted to the devices that are to be integrated into the vehicle, can optimally utilize the available space, and can be equipped with user-specific devices in standard racks.