Crucial 16GB (2 x 8 GB) DDR4 SDRAM Memory Kit - 16 GB (2 x 8GB) - DDR4-2400/PC4-19200 DDR4 SDRAM - 2400 MHz - CL17 - 1.20 V - Non-ECC - Unbuffered - 260-pin - SoDIMM - Lifetime Warranty

All DDR3 and DDR3L modules are lead- and halogen-free Limited lifetime warranty Easy to install Increases Mac system performance Compatible with Mac systems* Available in SODIMMs, RDIMMs, and ECC UDIMMs Every single module extensively tested at the component and module level