Cougar MO-C550IG Wired USB Optical Mouse w/ 6400 DPI (Iron-Grey)<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"> Interface: Golden-plated USB plug </span></li><li><span class="a-list-item"> Sensor Type: Optical </span></li><li><span class="a-list-item"> Polling Rate: 1000Hz/1ms </span></li><li><span class="a-list-item"> On-board Memory: 512KB </span></li><li><span class="a-list-item"> Programmable buttons: 6 buttons </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41ad-qIc8KL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41KdW9I7z8L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41MckVxhnrL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51WMX2UCOIL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41FNujAjwyL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41jMD9D5SPL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41BUK5Oz%2BRL.jpg" noproxy>