1GB DDR2-667 (PC2-5300) RAM Memory Upgrade for the Apple iMac 4，1 (20-inch， 2.0GHz， MA200LL/A) Intel Core Duo<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>1GB DDR2-667 PC2-5300 Non-ECC Unbuffered 200 Pin 1.8V CL=5 Memory 64X8</li><li>When you purchase RAM from 4AllDeals， it comes with a lifetime warranty， as well as lifetime telephone technical support from our US-based technicians. PLEASE NOTE* If you do not purchase this module from 4AllDeals direct， you do not get the lifetime warranty or tech support offered in this ad.</li><li>Put your trust in a company that has been in business for 12 years， not some fly by night seller you won't be able to get ahold of!</li><li>100% Guaranteed Compatible for the computer listed in the title of this ad</li></ul></div><img src="http://ecx.images-amazon.com/images/I/417Wof9fo1L.jpg" noproxy>