Coolerguys Dual 60x60x25mm USB Fan Set<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"> Fan Specifications /per fan: RPM: 2700 +/- 10%， CFM: 13.8， dB:19 </span></li><li><span class="a-list-item"> RoHs compliance / Boxed </span></li><li><span class="a-list-item"> USB Powered </span></li><li><span class="a-list-item"> Dual Ball Bearing， Long Life of 50，000 hours @ 30C </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51Euz2m2W6L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51fRFlPjvDL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51zGnw8d5gL.jpg" noproxy>