The Round Post style refers to a common attachment method utilised for mounting connectors through a Printed Circuit Board (PCB). In this configuration, the round post of the connector, which serves as an extended conducting pin, is inserted through a pre-drilled hole in the PCB. It is then soldered on the underside of the board, creating a secure mechanical and electrical connection. This method ensures that the connector maintains a robust link with the PCB circuitry, while also providing stability to the mounted connector. However this mechanism is not limited to PCB mounting and can be found in a range of connectors designed for integrated electronics.