Product details:

Crucial CT32G4S266M Overview Muscle up your Mac with the 32GB DDR4 2666 MHz SO-DIMM Memory Module from Crucial. Providing 32GB of RAM, this module features a clock speed of 2666 MHz. Featuring a 260-pin form factor, this unbuffered DDR4 SO-DIMM is compatible with 1.2V power. Additionally, the Crucial 32GB DDR4 2666 MHz SO-DIMM Memory Module for Macs boasts 19-19-19 extended timings. Reliability for Mac Systems Crucial memory modules are tested at the component level for voltage and temperature resistances, signal integrity, and software compatibility. Speed for Mac Systems A memory upgrade is the fastest, easiest, and most affordable way to get more performance out of your Mac system. Use of them does not imply any affiliation with or endorsement by them.