The MMCX (Micro-Miniature Coaxial) product series is a micro-miniature version of the MCX. It has the all features of the MCX series, including 50 ? impedance with a broadband capability of DC to 6 GHz and secure, fast and easy snap-on/ snap-off coupling, and a wide range of available connectors. However, MMCX connectors have a smaller footprint than the MCX series.