This Apple Memory Module is a genuine, Apple-branded 32GB DDR4 kit running at 2400MHz, supplied as a matched pair of 2x16GB sticks rather than a single module — kits of matched modules are the standard way Mac desktop RAM upgrades are sold, since installing memory in identical matched pairs (rather than mismatched capacities or speeds) is what lets a compatible Mac's dual-channel memory controller run at full bandwidth. This module is intended for the specific generation of Mac desktop (historically iMac and Mac Pro models with genuinely user-accessible, upgradeable DDR4 memory slots, before Apple's move to fully soldered, non-upgradeable unified memory on Apple Silicon Macs) that supports DDR4-2400 SO-DIMM or DIMM memory at this speed. Buyers should confirm their specific Mac model and its supported memory type/speed/maximum capacity before purchase, since Apple's own supported memory configuration varies significantly across different Mac generations, and a mismatched speed or capacity kit may not be recognized correctly or run at its full rated speed even if it physically installs.