Multiple monitors with EliteBook 830 G5

[Drodbar]

Hello - apologies if this has been answered.  I've had a good look, but can't see my specific problem.

I have an EliteBook 830 G5 and would like to connect two external monitors, so that I can extend my desktop across both.  

Can I use both the USB-C connection AND the HDMI port at the same time to drive two external displays?

If not, am I right in understanding that HDMI cannot be split, but can the output from the USB-C port be split in any way?

Thanks in advance.

[TryToDoMybest]

Hello

Intel Graphics card 630 supports up to 3 4K displays , including the internal one.

I attached two 4K monitors :

1 to HDMI port

1 to an USB-C_to_HDMI dongle

internal display is FHD.

bye