ADATA 8GB Premier DDR4 2400MHz 260-pin SO-DIMM Laptop Memory Single (AD4S240038G17-S) at Amazon.com
Amazon.com: OWC 8GB (2 x 4GB) PC19200 DDR4 2400MHz SO-DIMMs Memory Compatible with Mac Mini (Late 2018), 27" and 21.5" iMac (Mid 2017), and Compatible PCs (OWC2400DDR4S08P) : Everything Else
SAMSUNG M471A1K43CB1-CRC 8GB DDR4 2400MH Memory Module (8 GB, 1 x 8 GB, DDR4, 2400 MHz, 260-Pin SO-DIMM) at Amazon.com
LENOVO - 8GB DDR4 2400MHZ SODIMM Memory at Amazon.com
Corsair CMK8GX4M2A2400C16 Vengeance LPX 8GB (2x4GB) DDR4 DRAM 2400MHz (PC4 19200) C16 Memory Kit - Black at Amazon.com