Crucial 4GB DDR2-667MHz (PC2-5300) CL5 ECC RDIMM DR 240-pin Server Memory CT51272AB667<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Crucial 4GB， 240-pin DIMM， DDR2 PC2-5300</li><li>667 MHz</li><li>CT51272AB667</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41QO40mE0jL.jpg" noproxy>