Details
G.SKILL AEGIS Series DDR4 RAM 16GB (1x16GB) 2666MT/s CL19-19-19-43 1.20V Desktop Computer Memory UDIMM (F4-2666C19S-16GIS)

AEGIS Series, designed for Intel Z370, Z490, Z590, Z690, B560, X99, X299 Series Chipset with Intel Core CPUs or newer, and AMD X570, B550 Series Chipset with AMD Ryzen CPU
Brand: G.Skill, Series: AEGIS, Model: F4-2666C19S-16GIS
16GB kit containing 1 x 16GB modules, DDR4-2666, 288-Pin, CAS Latency CL19 (19-19-19-43) at 1.20V (JEDEC)
ECC: No, Single Channel Kit, Recommended Use: High Performance or Gaming Memory
Reaching the rated JEDEC speed and system stability will depend on the compatibility and capability of the motherboard and CPU used.
G.Skill QVL Certified Motherboards: https://www.gskill.com/qvl/165/185/1575527599/F4-2666C19S-16GIS-QVL
Do not mix memory kits. Memory kits are sold in matched kits that are designed to run together as a set. Mixing memory kits will result in stability issues or system failure.