Cherry KXN3-8451 - circuit board markings
snuci
<a rel="nofollow" class="external text" href="https://deskthority.net/wiki/File:Cherry_KXN3-8451_PCB_markings.jpg">Deskthority</a> (<a rel="nofollow" class="external text" href="https://deskthority.net/wiki/images/8/85/Cherry_KXN3-8451_PCB_markings.jpg">direct link</a>)