1GB RAM Memory Upgrade for the Dell OptiPlex 320 Desktop， Mini Tower and Small Form Factor Systems (DDR2-667， PC2-5300)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Guaranteed Compatible with the Dell OptiPlex 320 Systems</li><li>Speed up your system with up to 4.0GB of RAM!</li><li>Lifetime Replacement Warranty!</li><li>Will ship the same day when ordered at or before 4pm EST! All others ship next day!</li><li>Fully-staffed call center to help with installation or inquiries! Call 866-335-1355 with questions or for help!</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41wQlgI7dDL.jpg" noproxy>