; Volkswagen Golf Mk5 (1K) Original radio options - InCarTec

There are multiple original radio options in the Volkswagen Golf Mk5 (1K), which option is the original fitted system?

VW-RCD300 (WITH SWC) VW-RCD300 (WITH SWC)
VW-RCD300 (WITHOUT SWC) VW-RCD300 (WITHOUT SWC)
VW-RCD500 (WITH SWC) VW-RCD500 (WITH SWC)
VW-RCD500 (WITHOUT SWC) VW-RCD500 (WITHOUT SWC)
VW-RNS MFD-2 (WITH SWC) VW-RNS MFD-2 (WITH SWC)
VW-RNS MFD-2 (WITHOUT SWC) VW-RNS MFD-2 (WITHOUT SWC)