The Logitech RS shifter and handbrake cannot be connected directly to the Logitech G923 steering wheel. To use them with the G923, you must use the Logitech G Racing Adapter, which is sold separately. Here are the steps to follow: - Connect the RS shifter and handbrake to the USB port on the Racing Adapter. - Connect the 9-pin cable supplied with the Racing Adapter to the shifter port on the underside of the G923 steering wheel. - Re-assign the controls in your games as described in the manual, as the sequential shifter and digital handbrake functions will emulate the existing gear positions on the steering wheel.