Timetec Hynix IC 64GB KIT(4x16GB) Compatible for Apple 2019 iMac 27-inch w/Retina 5K Display DDR4 2666MHz PC4-21300 2Rx8 CL19 1.2V SODIMM Memory RAM Upgrade (64GB KIT(4x16GB))

Design For Early 2019 iMac w/ Retina 5K Display model ID: iMac 19,1 (i5 3.0GHz, i5 3.1GHz, i5 3.7GHz, i9 3.6GHz)DDR4 2666MHz PC4-21300 260 Pin Unbuffered Non-ECC 1.2V CL19 Dual Rank 2Rx8 based 1024x8Module Size: 16GB Package: 4x16GBPower Supply: VDD=1.2V (1.14V to 1.26V) VDDQ = 1.2V (1.14V to 1.26V)Guaranteed – Lifetime warranty from Purchase Date Free technical support (support@timetecinc.com) MON - FRI 9AM-6PM PST

Compatible For Mid 2020 iMac w/ Retina 5K Display model ID: iMac 20,1 (i5 3.1GHz, i5 3.3GHz, i7 3.8GHz, i9 3.6GHz),Compatible For Mid 2020 iMac w/ Retina 5K Display & AMD 5700 XT Video Card model ID: iMac 20,2 (i7 3.8GHz, i9 3.6GHz),Compatible For Early 2019 iMac w/ Retina 5K Display model ID: iMac 19,1 (i5 3.0GHz, i5 3.1GHz, i5 3.7GHz, i9 3.6GHz),DDR4 2666MHz PC PC Unbuffered NonParity Non-ECC 260 Pin 1.2V CL19 Dual Rank 2Rx8 based Module Size: 64GB Package: 4x16GB,Wait 30 seconds for your iMac to recognize the new memory d Lifetime from Purchase Date Free technical support

Ram memory	64 GB
RAM memory	DDR4
Ram speed	2666 MHz
Brand	Timetec
Number of pins	260
Volts	1.2 V
Assembled product height	0.5"
Piece count	4
Retail packaging	Single Piece