Supported RAM on Proliant ML30 Gen9

Hi everyone, i have a Proliant ML30 Gen server whit a Intel Xeon CPU E3-1220 v5, 4GB RAM DDR4 1rx8 2113 MHz UNBUFFERED ECC CL15, and the server it's been running out of RAM because i'm virtualizating two machines whit Windows Server 2012 so i need more RAM and i cant't find the especific 8GB RAM for this model anywhere, searching only i've found a Kingston 8GB memory KTH-PL421E/8G 8GB DDR4 2113 MHz UNBUFFERED ECC CL15, but i have a single rank memory and this i think it's dual rank; a partner recommended me to buy and install the model KTH-PL424E/8G 8GB DDR4 2400 MHz UNBUFFERED ECC CL17.

The question is, This server model and processor it's compatible whit dual rank memory?, Can i install a 2400MHz frecuency memory and a 2133MHz whit different CAS latency? (obviously in the configuration mencionated above)

Thanks for your answers and your help.