Abstract: A dual data connector to enable a digital apparatus to be connected to at least one host apparatus, the dual connector comprising a first connecting of a first interface for connecting with a corresponding further connecting part of the first interface of an apparatus; and a part connecting part of a second interface for connecting with a corresponding other connecting part of the second interface of the apparatus, the first connecting part being electrically in parallel with the second connecting part, such that if the apparatus has only one of the first interface and the second interface, the relevant one of the first connecting part and the connecting part can be used to enable data transfer to take place. A portable digital data storage device with dual data connectors is also disclosed.