The Sun Microsystems Microphone II (PN: 370-1678-01) is a specialized, industrial-style desktop microphone module produced in the mid-1990s. It was designed to provide voice-input and multimedia capabilities for high-end Unix workstations, particularly the Sun SPARCstation and Sun Ultra computer systems. Utilizes a standard 3.5mm mini-jack plug. It connects directly to the audio input port on the workstation's main chassis or its external audio breakout box.