Full Details from Amazon.com : http://www.amazon.com/gp/product/B00HQ4XOD8?tag=onigi-20<br /><br />16GB (4X4GB) DDR3 MEMORY FOR IBM System X3200 M3 X3250 M3 X3550 M3<br /><br />Brand Hynix <br />MPN HMT151R7BFR4C-H9 <br />Type DDR 3 ECC Registered <br />Number of Modules 4 <br />Capacity per Module 4 GB <br />Rank 2Rx4 Dural
