US Patent 11962115 Expansion device with power and data connections

A multifunctional single-interface electronic expansion device, comprising an external electronic expansion device and a power transmitting cable. The external electronic expansion device comprises a device body, an electrical connecting module, a data signal processing module, a power transmitting module, and a first assembling member. The device body comprises a first wall surface and a second wall surface. The electrical connecting module is disposed at the device body and is exposed from the first wall surface to be electrically connected with or detached from an interface of a first electronic device. The data signal processing module is electrically connected with the electrical connecting module. The power transmitting module is electrically connected with the electrical connecting module. The power transmitting module comprises a power transmitting interface exposed from the second wall surface. The first assembling member which may be formed as an annular magnetic attracting body is disposed at the power transmitting interface.