Keep serial infrastructure in service while moving host connectivity to USB. The Digi EdgePort/1i provides a focused RS-422/485 conversion path for one DB-9 serial device, making it a practical fit for environments where legacy equipment still matters and downtime is expensive. This adapter is designed for teams that need reliable serial access without adding complexity. By translating a single serial connection to USB, it helps preserve compatibility with industrial controllers, test systems, and specialized peripherals that depend on RS-422/485 signaling. The compact footprint makes it easy to deploy at the workstation, in a lab, or alongside field service equipment. For organizations maintaining mixed-generation hardware, a purpose-built converter like this can be the difference between extending asset life and forcing premature replacement. It is a straightforward way to keep critical devices reachable from modern systems while maintaining the electrical characteristics required by the serial endpoint.