Abstract: An electronic device including a metal casing and at least one antenna module is provided. The metal casing includes at least one window. The at least one antenna module is disposed in the at least one window. The at least one antenna module includes a first radiator and a second radiator. The first radiator includes a feeding end, a first ground end joined to the metal casing, a second ground end, a first portion extending from the feeding end to the first ground end, and a second portion extending from the feeding end to the second ground end. A first coupling gap is between the second radiator and the first portion. A second coupling gap is between at least part of the second radiator and the metal casing, and the second radiator includes a third ground end joined to the metal casing.

Abstract: A data storage system with information security protection includes an SSD and at least one activation device selectively connected to the SSD. The SSD has a device identifier, and includes a data storage unit and a controlling and processing unit. The controlling and processing unit is in information connection with the data storage unit, and is written with at least one set of firmware data that is triggered and activated by an activation key to execute a predetermined task on the data storage unit. The activation device includes a data processing unit which is written with the activation key in advance, and has a pairing mode and an enabling mode. In the pairing mode, the data processing unit accesses and stores the device identifier. In the enabling mode, the data processing unit compares the stored device identifier to output the activation key to the controlling and processing unit.

Abstract: A method for controlling access of a secure digital memory card includes inserting the secure digital memory card into a card reader; an electronic device performing an application program to detect whether a first password is stored in the secure digital card when a write protection function of the secure digital memory card is enabled; inputting a second password when the first password is not stored in the secure digital memory card; and sending a first command embedded with the second password to disable a read access function of the secure digital memory card.

Abstract: Two independent terminal areas and a memory unit are contained in a single casing and provided for users to use a memory card separately. A terminal area is disposed separately on two corresponding sides of the memory card, and a control circuit and two memories are installed in the memory card, and the control circuit controls the two memories, and each of the two memories is connected to one of the terminal areas to form an independent data access path, so as to achieve the effect of using a casing of a single memory card to provide an application mode and a capacity of a double memory card.