Corsair CMK8GX4M2A2400C16 Vengeance LPX 8GB (2x4GB) DDR4 DRAM 2400MHz (PC4 19200) C16 Memory Kit - Black at Amazon.com
Amazon.com: OWC 32GB (2 x 16GB) PC19200 DDR4 2400MHz SO-DIMMs Memory Compatible with Mac Mini (Late 2018), 27" and 21.5" iMac (Mid 2017), and Compatible PCs (OWC2400DDR4S32P) : Everything Else
Kimtigo DDR4 16GB Laptop Dram 2666MHz (PC4-21300) CL19 (Compatible with 2400MHz or 2133MHz) 1.2V Notebook (SODIMM) RAM Non-ECC Unbuffered Single Rank 260 Pin PC Computer Memory Module Upgrade at Amazon.com
Corsair Memory Kit 16GB (2x8GB) DDR4 2400MHz SODIMM Memory, (2 x 8GB) at Amazon.com