Adesso PS/2 to USB Adapter， connects 2 PS/2 connectors to 1 USB port/hub (ADP-PU21 )<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Easy installation， no software driver needed </span></li><li><span class="a-list-item"> Use Existing PS/2 Input Devices on New USB Computers </span></li><li><span class="a-list-item"> Connect Two PS/2 Input Devices to One USB (PC) Port </span></li><li><span class="a-list-item"> Works With All Adesso Touchpad and Trackball Keyboards </span></li><li><span class="a-list-item"> Compliant with USB 1.0/1.1 Revisions </span></li><li><span class="a-list-item"> Supports both UHCI and OHCI specifications </span></li><li><span class="a-list-item"> Converts 2 PS/2 devices (Keyboard &amp; Mouse) to 1 USB port </span></li></ul><!--   Loading EDP related metadata  --><div aria-live="polite" class="a-row a-expander-container a-expander-inline-container"><div aria-expanded="false" class="a-expander-content a-expander-extend-content" style="display: none;"><ul class="a-unordered-list a-vertical a-spacing-none"><li><span class="a-list-item">Supports computer USB interface to PS/2 port of KVM Switch</span></li><li><span class="a-list-item">Supports Bus-Power meaning no power adapter is needed</span></li><li><span class="a-list-item">Easy installation with no software driver required</span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51wRJmiBhLL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41nwGs6OKmL.jpg" noproxy></div></div>