Amphenol Quadrax contacts are designed for high-performance applications requiring high data transfer rates and low power consumption. These contacts feature a unique design with strategically spaced inner contacts forming matched impedance differential pairs, and a rugged outer contact for enhanced durability. They are commonly used in MIL-DTL-38999 Series III connectors and are available in various configurations to accommodate different cable types and electrical protocols. Modification of the connector is required to accommodate keyed contacts. Consult Amphenol for availability of other finishes.