4GB Kit [4x1GB] DDR2-667 PC2-5300 ECC Unbuffered 240 Pin 1.8V CL=5 Memory 64X8 4GB Kit [4x1GB] DDR2-667 PC2-5300 ECC Unbuffered 240 Pin 1.8V CL=5 Memory 64X8 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. PLEASE NOTE This ad is for an ECC memory module. Most consumer desktops take NON-ECC memory. Please pay extra attention prior to ordering, and make sure that your computer can take ECC memory.