Where is my sat nav cd-rom located in a Laguna 3 2009

Assistance required please, I have a Renault Laguna 2009 Initiale, and have an update sat nav cd disc to load, my problem is, where is the cd-rom, I can't find it anywhere in the car, the only disc lot I can see is for the dash cd player, which is single cd disc only. Or do I have to take the car back to Renault for them to update to latest map version? Thank you for any help. Andrew

Where is my sat nav cd-rom located in a Laguna 3 2009