Introduction: The MacBook Professional A2159 logic board supports i5 (1.four GHz) and i7 (one.seven GHz) CPUs, ensuring compatibility, tested reliability, and preservation of key options like contact ID for mid-2019 https://moverapple.com/products/macbook-pro-retina-13-a2159-logic-board-i5-i7-replacement?VariantsId=10127