Synology DDR3 RAM Module 4GB (RAM1600DDR3-4GB)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>DDR3-1600 unbuffered So-DIMM 204pin CL=11 1.5V</li><li>Applied to Synology DiskStation models: DS2015xs， DS2415+， DS1815+， DS1515+</li><li>Applied to Synology RackStation models: RS2416+/RS2416RP+， RS815+/RS815RP+</li><li>Also known as Synology RAM Module RAM1600DDR3-4G</li><li>For expanding your Synology NAS server's memory capacity</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51oBDRje4fL.jpg" noproxy>