If you are looking to add GNS 530 for you flight simulator, please check out our FlightSimBuilder GNS 530. Here is also a link to a great review of the product https://www.youtube.com/watch?v=rPgfMltXpY0 :
GNS530 DIY build - Home Cockpit Builders - Microsoft Flight Simulator Forums
FHW TM – Flight Simulators – Garmin GNS 530
Commander Garmin GNS-430/530 | Aircraft Spruce
Free Aviation GPS Simulators
Garmin 430/530 - Free Training Video - Flying the POGGI2 SID - YouTube
Garmin GNS 430/530 and 430W/530W Training
Review: The Realsimgear GNS530 - Threshold
RealSimGear - GNS530 | Aerosoft Shop
Garmin GNS 430 and GNS 530 Bundle for Flight Simulators - MyPilotStore.com
GNS 530 and VOR issue - Microsoft Flight Simulator (2020) - The AVSIM Community
GNS 530 | Garmin
Beginners guide to programming flightplans in the Garmin GNS530 GPS in Microsoft Flight Simulator - YouTube
Working Title Garmin GNS 530 / GNS 430 now available in MSFS Marketplace : r/MicrosoftFlightSim