A device test architecture and interface is provided to enable efficient testing embedded cores within devices. The electronic device further includes a cable holding section provided at an inner wall of the housing and having a slit whose width is smaller than a size of the second connector. Further, the invention relates to a magnetic recording medium comprising a magnetic layer containing a magnetic particle and a method of producing a magnetic recording medium including forming a layer containing an alloy that can form the foregoing hard magnetic ordered alloy phase, oxidizing the layer, and annealing the layer in a non-oxidizing atmosphere. Especially addressed to operators owning different networks based on different systems, this Intersystem Number Portability Register is extended to comprise routing data for home subscribers in different serving networks based in different wireless systems. The groove has its opening end side expanded by expansion of the holder along the radial direction. The presence of the chemical is determined by using ion mobility spectroscopy.