OWC Mac Pro Upgrades Work With the Entire 2013 Series. 100% COMPLIANT: With JEDEC Standard Specifications, ROHS Compliant, Warranty Safe Upgrade. COMPATIBLE WITH: Mac Pro 2013 ram Model ID: MacPro6,1 3.7GHz 4-Core Xeon & 3.5GHz 6-Core Xeon & 3.0GHz 8-Core Xeon & 2.7GHz 12-Core Xeon.
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