1658537-4 is a D-subminiature cable connector from the TE Connectivity AMPLIMITE series, designed for reliable signal connections in various electronic applications. The connector features a steel tin-plated shell and a 94V-0 rated thermoplastic black insert, providing durability and flame resistance. It utilizes crimp snap-in contact technology and is compatible with size 20 DF contacts. The connector is RoHS compliant and intermateable with D-subminiature connectors dimensionally complying with MIL-C-24308. Common applications include industrial machinery, medical instrumentation, computers and peripherals, and data storage systems.