Latitude e5570 (6300hq, HD 530) ddr4 2400 Mhz works only at 2133 Mhz

Good day, Everybody!

I've just upgraded the stock 4Gb x 2 ddr4 2133 ram to 8Gb x 2 ddr 2400 ram (Kingston HX424S14IBK2/16). However, the new ram works only at 2133 Mhz and I cannot figure out how to enable its XMP profile DDR4-2400 CL14-14-14 @1.2. The ram works at JEDEC DDR4-2133 CL13-13-13 @1.2V. In the ram datasheet (http://www.kingston.com/dataSheets/HX424S14IBK2_16.pdf) there are three profiles indicated:

• JEDEC/PnP:
DDR4-2400 CL14-14-14 @1.2V
DDR4-2133 CL13-13-13 @1.2V
• XMP Profile #1:
DDR4-2400 CL14-14-14 @1.2V

So 2400 mode is supported both under XMP and under JEDEC.

How do I enable 2400 CL14 mode?

Crucial offers ram upgrade for e5570 to ddr4 2400 (www.crucial.com/.../CT8071480) claiming full compatibility. However, crucial's ram is rated CL16, not CL14. Can it be that e5570 cannot run ddr4 2400 at CL14? Only at CL16?

Latest bios is installed, win10pro latest upgrades. Tried intel extreme tuning utility, it does not let you adjust ram speed or pick xmp or jedec profiles.