Abstract: Disclosed are an electrical power supply expansion card and a computer case. The electrical power supply expansion card comprises a housing and a circuit board. The circuit board is arranged on the housing, and the housing is installed in the computer case. The circuit board is provided with at least one peripheral interface, and is further provided with at least one power source interface. The at least one power source interface is detachably connected to a power source in the computer case so as to obtain electric power and output electric power via the at least one peripheral interface. The technical solution provided in the present invention can enable the expansion card to be an expanded power source of the power source in the computer case, thus supplying power to an external device, thereby improving the usability of the expansion card.

Abstract: A plug strip. A cover capable of covering receptacles is hingedly connected to a receptacle end face; and a first notch and a second notch are respectively provided at both side edges of the cover. During use, an electrical wire passes through the first notch or the second notch to be plugged into the receptacle or a USB output interface, so that the cover can be kept closed. Therefore, dust pollution and occurrence of an electric shock accident due to long-time use can be effectively prevented.

Abstract: A hard disk storage device includes a hard disk box configured to accommodate a hard disk body, and a hub arranged in the hard disk box. The hard disk body is electrically connected to the hub. The hub is provided with two or more USB interfaces. The USB interfaces are arranged on a side wall of the hard disk box. The hard disk storage device integrates a storage function of the hard disk and a data interface extension function of the hub, and is convenient to use and carry.

Abstract: Provided is a pin header (100). The pin header (100) comprises an insulation body (10) and a plurality of pins (30) arranged at intervals. A portion of each pin (30) is fixed to the insulation body (10). Each pin (30) comprises a wire connection portion (31). A welding platform (11) is formed at a surface of the insulation body (10). A plurality of wire connection portions (31) are fixed to a platform surface (111) of the welding platform (11). The pin header (100) aims to realize mechanical automation of a welding operation between a wire and a wire connection portion (31) thereof, thereby improving productivity, and reducing labor costs.

Abstract: The invention is applicable to the technical field of electronics, and provides a jump wire-free patch board comprising a patch board body and a power line. The patch board body comprises at least a switch module, a power supply conversion device, a jack module, an elastic metal sheet assembly and a protection module. All components of the patch board body are integrally packaged on a circuit board, the protection module comprises an overload protection switch and a lightning protection and anti-surge device, the power supply conversion device comprises at least one of a high voltage AC output terminal and/or a low voltage DC output terminal, and the protection module is electrically connected to the high voltage AC output terminal and/or the low voltage DC output terminal through the elastic metal sheet assembly. Whereby, the invention realizes a more safe connection structure without jump wire.