B&B Electronics SW057A Multi-port RS-232 Switch

This unit is a rack-mountable multi-port RS-232 serial switch or distribution multiplexer, designed to allow centralized control, distribution, or switching of multiple serial devices such as modems, terminals, or instrumentation. Key Details: Model: SW057A Serial No.: 01100010 Ports: 48 DB-25 female connectors Configuration: 2 banks (BANK A and BANK B) with 24 ports each Control Interface: Likely through a master port (e.g., HOST, marked as STANDARD PORT) Power Input: 100–240V AC (standard IEC socket) Mounting: 19” rack mountable Country of Manufacture: USA Application: – Serial device networking – Lab instrumentation control – Telecomm modem banks – Remote data acquisition – SCADA and legacy industrial controls Please review pictures carefully and let us know if you have any questions!