IBM 4 GB DDR2 SDRAM Memory Module - 4 GB (2 x 2 GB) - 667MHz DDR2-667/PC2-5300 - ECC - DDR2 SDRAM - 240-pin DIMM<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Sold Individually</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51ow-3DiGzL.jpg" noproxy>