Abstract: A modularized hub is adapted to be electrically connected to an upstream device, an AC power source and at least one downstream device that are located outside the modularized hub. The upstream device includes a connection port. The connection port supports a power supply mode and a charging mode. The modularized hub includes a main body base and a module structure. The main body base includes an AC connection terminal, a first power supply module, and a base connection terminal. The module structure includes a module connection terminal, a second power supply module, an upstream transmission line, a control circuit, and at least one downstream connection terminal.