Maintain reliable access to RS-422 and RS-485 devices without redesigning the serial layer. The Brainboxes US-320 bridges USB 2.0 hosts to legacy industrial equipment, giving technicians and integrators a compact external adapter for mixed-generation environments. Its high-retention USB connector helps reduce accidental disconnects in racks, panels, and mobile service kits where cable strain is common. With an operating temperature range down to -40 C, this adapter is suited to cold-storage, outdoor enclosures, and other environments where standard office-grade peripherals fail early. For teams supporting long-lived automation, instrumentation, and control systems, the US-320 offers a practical way to preserve serial access while keeping the host side simple. The lifetime warranty adds confidence for deployments where replacement cycles are costly and downtime is not an option.