Spectra Geospatial RS232-to-USB Adapter Cable The Spectra Geospatial 90938 RS232-to-USB Adapter Cable provides a reliable interface between legacy RS232 serial devices and modern USB-equipped field controllers and laptops . Built for field durability and consistent signal conversion, this adapter helps extend the usability of trusted legacy equipment in current digital environments. Key Features • RS232 to USB conversion for connecting legacy surveying instruments to modern computers and controllers • Plug-and-play compatibility with most Windows-based surveying and mapping systems • Supports legacy equipment integration , extending the lifecycle of RS232-based devices