This is the RCA042N camera connection adapter, compatible with aftermarket navigation systems. - Model Name: RCA042N - Type: Camera Connection Adapter - Application: For aftermarket navigation systems - Compatible Models: Navigation systems equipped with RCA terminals Thank you for viewing. This adapter is for displaying the around view/bird's-eye view or rear camera image, which is displayed on the original room mirror, on an aftermarket navigation system or aftermarket monitor. The item has been opened once, but it is unused.