Adesso Mini Trackball USB Keyboard (ACK-5010UW-00)<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"> 88/89 keys keyboard with embedded numeric keypad and 12 dedicated function keys </span></li><li><span class="a-list-item"> Built-in trackball for mouse emulation </span></li><li><span class="a-list-item"> Fully function of 104/105 keys </span></li><li><span class="a-list-item"> Windows 7/ Vista/ XP &amp; below </span></li><li><span class="a-list-item"> Resolution: 200 DPI </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/411K6NRDYCL.jpg" noproxy>