The SeaLINK+4/232 (Model 2401) is a high-performance USB-to-serial adapter that provides four RS-232 ports for reliable communication with legacy devices. Designed for industrial, lab, and commercial use, each DB9M port supports data rates up to 460.8K bps and 50-foot cable lengths. Fully powered via USB and featuring high-retention connectors, this rugged adapter is ideal for expanding serial I/O on any USB-enabled system..