These dust protection covers can be used in Neutrik D-series size panel connectors when no cable connector is mated. The cover is easy to use and does not block the connectors in the panel below when not in use. It has a retaining cord and eyelet which fixes under one of the panel connector mounting screws.
Type SCF is suitable for use with XLR female, RCA(phono) and BNC types, plus Neutrik HDMI, USB and Firewire connectors. Type SCM is suitable for use with XLR male.