Abstract: A data storage/transfer device includes at least a data storage component, such as a integrated memory chip or a card reader for data storage, at least a connector on one end, e.g., a USB Type A or USB Type C connector, and at least one connector on the other end, preferably, a different type of connector, e.g., a Micro-B USB or a Lightning connector. Users may use embodiments of the present invention as a data storage device and/or data transferring cable and/or charging cable. Some embodiments may include host mode function, e.g., OTG host mode, to allow outside devices to act as hosts, e.g., a mobile phone, to read/write on data storage components of embodiments of the present invention.