Ram/Motherboard compatibility question

[Mattreed823]

My mobo is DDR4-2133 and my ram is DDR4-2666, I didn't realize until they came in the mail today. Before I put it all together I was wondering if this will be okay? Or should I send the ram back and get a correct one

 

[Kevern_11]

It will be fine, the RAM will just run at 2133mhz instead of 2666mhz