OEM Apple 64GB (4x16GB) DDR4 2666MHz Memory Module Kit for 2019 27" iMac Upgrade
---Apple Model No. MUQP2G/A ---SO-DIMM 260-Pin ---64GB DDR4 2666MHz (PC4-21300) - 4x16GB (in two separate packages) ---1.2 V unbuffered non-ECC ---Compatible with iMac (Retina 5K, 27-inch, 2019, MRQY2LL/A, MRR02LL/A, MRR12LL/A).