Apple 4GB Memory (1x4GB) PC3-14900 DDR3-1866MHz CAS=13 ECC DIMM Memory for Mac Pro (Late 2013)<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"> DDR3 PC3-14900 DDR3-1866 4GB 240-Pin DIMM ECC for Mac Pro (Late 2013) </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/414Gk22g-gL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31--kD9qFBL.jpg" noproxy>