100% COMPLIANT: With JEDEC Standard Specifications, ROHS Compliant, Warranty Safe Upgrade. This OWC Mac Pro Upgrade Works With the following 2009-2012 Models. COMPATIBLE WITH: Mac Pro 12-Core (Model ID: MacPro5,1) Mac Pro 8-Core (Model ID: MacPro5,1) Mac Pro 6-Core (Model ID: MacPro5,1) Mac Pro Quad-Core (Model ID: MacPro5,1) Mac Pro 8-Core (Model ID: MacPro4,1) Mac Pro Quad-Core (Model ID: MacPro4,1).
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