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ProtoStax DB9/RS232 Connector Kit

ProtoStax DB9/RS232 Connector Kit

Regular price $2.00 USD
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Do you need to add an RS232-TTL port to your next project? The ProtoStax DB9 Connector Kit makes it easy to add a professional looking DB9 port to your ProtoStax enclosure. 

The kit comes with a short side wall piece with a universal DB9 cutout, which will work for both forward and rear mounting connectors, and installable in any orientation (4 pins down or up). The photo shows an example SparkFun RS232 Shifter rear mounted (not included!).

Also included are two #4-40 screws and nuts, in case you need those to secure the connector to the wall (for example, with the SparkFun RS232 Shifter, remove their existing jack screws and use the provided #4-40 screws to secure. If you have a front-mounting connector, for example, you can use the provided screws and nuts (or use your own!)

This kit will work with any ProtoStax enclosure, so you can add a DB9 port to your Arduino, Raspberry Pi or other MCU enclosures! 

Simply replace the existing short side wall of your enclosure with the one from this ProtoStax Kit. Voila! 

This Extension Kit does not include the Enclosure. Make sure to add a ProtoStax Enclosure to your order if you don't already have it!

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Featured projects

ProtoStax Enclosures are Stackable, Modular & Extensible

They ease your path from Prototype to Product! Make your prototypes useable and attractive with ProtoStax!

  • ProtoStax Enclosure / Case in Platform Configuration showing Arduino. Pre-drilled and threaded mounting holes make assembly easy and convenient. Acrylic risers elevate board off the surface for improved airflow

    Use it as a prototyping plate, with full and open access to your device while prototyping. Rubber feet protect your board and your table top! 

  • ProtoStax Enclosure / Case in Open Configuration showing Arduino

    Omit the side walls and just add the top for an open configuration with more airflow and open access. 

  • ProtoStax Enclosure / Case in Fully Closed Configuration showing Arduino

    Add side walls and the top to form a fully enclosed case for maximum protection. 

    The cases offer connectivity to external systems using our unique cable management methods (see features above)


Extension kits and Add-Ons allow you to add functionality to your enclosure. Add a fan or two, switches, camera & tripod mount, and more!

Just filter by "extension kit" or "add-on" in the main shopping page to view the choices, or click below!

Check out Extension Kits


All ProtoStax cases are compatible with each other and can be stacked side-by-side (horizontally) or one on top of the other (vertically). Mix-and-match multiple ProtoStax cases and put together a larger enclosure from the individual ones! Our Raspberry Pi + Breadboard, or Raspberry Pi + Arduino enclosures are popular bundles. You can also mix-and-match various Raspberry Pi enclosures (A+, B/B+, Zero enclosures to build your hybrid cluster with whatever Pis you have lying around!)