Front of the sound card <a href="https://en.wikipedia.org/wiki/Gravis_Ultrasound" class="extiw" title="w:Gravis Ultrasound">Gravis Ultrasound</a> Plug &amp; Play (GUS PnP) Pro Version 1.0 by Advanced <a href="https://en.wikipedia.org/wiki/Gravis" class="extiw" title="w:Gravis">Gravis</a> Computer Technologies Ltd., developped in 1995.
<a href="https://de.wikipedia.org/wiki/Benutzer:TMg" class="extiw" title="de:Benutzer:TMg">TMg</a>
CC BY-SA 2.0 de
<span class="int-own-work">Self-photographed</span>