I am working on the documents to comply with the MDR for our products. I'm a bit confused about what applies to my case: We send a kit with a main device and some parts that can optionally be attached to the main device for certain patient groups to fulfill the intended purpose of the main device. So some patients will need the parts on the device, others not. Can we call this a configurable device or is this a device with accessories? And if this is a configurable device, when would this have been accessories? If I understand it correctly from the MDR, we need a separate Declaration of Conformity and Technical file for accessories, but not for components of a configurable device, right?