RS232 Adapters 

For Machines with RJ45 & DB25 Connections

  • Multicolored & Modular
  • Easy to swap out
  • Male & Female, 25pin or 9pin
  • For use with RS232 cable (not Ethernet)


Since different styles of CNC machines may need different wiring, we’ve got you covered. Our RS232 Adapters work with our RS232 Cables to create a modular, plug-and-play cabling system.

Each RS232 Adapter is pinned out for specific controls. You just have to let us know the control and we’ll make sure you get the correct RS232 Adapter.

On the PC side, we offer standard 9pin adapters, as well as 25pin for older PC’s or switchboxes. For more info on our cables see our RS232 Cable Page

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Tech Specs

Our Serial Connect line is perfect for shop floor workers inclined to use a traditional RS232 cabling connection to machine tools. These products are compatible with new & legacy RS232 CNCs, serial equipment, point of sale applications, & other mobile devices.

With options to link up via CAT5/6 Ethernet cables or direct ports to PCs, & even for new laptops with only USB connections, we can connect you. The USB-to-Serial converter is the perfect accessory for laptops computers that do not have a traditional 9pin RS232 port. Connect your CNC control to your computer using our RS232 serial cables & adapters – they are pinned & available in various lengths.