10-pin modular adapters are ideal for applications where all your serial lines need to be present. Use this adapter to connect Digiboard or Boca board products requiring ring indicator and carrier detection pins. Connector 1: 10-pin RJ45 Connector 2: DB9 Female Please Note: Picture shows this adapter before assembly; this modular adapter will need to be assembled so that it is functional. There is not a universal way to assemble them, so please contact us for details. We'll be happy to assemble any adapter (for a nominal labor charge) to fit your application so that they are ready to use upon arrival.