/04 indicates a socket connector (female) with 9-100 contacts. 'A' specifies the shell size, which corresponds to 9 positions. '06' indicates 1.000 inch (25.4mm) gold-plated, 25 AWG single strand uninsulated wire. C specifies a cadmium shell finish. M83513 is a US military standard (MIL-DTL-83513) for Micro-D connectors.