updating ColorSource software

I just want to confirm than when updating the software via the UpdaterAtor for ColourSource Spot units, I need an ETC 5000A1039 USB - RS485 Converter Assembly.

 

AND I need an adapter from RS485 to DMX (since my units are 5pin).

 

What's the difference between the RJ45 and RS485?

 

Thanks.

Andrew

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