Do I have a HDMI 2.0, 2.0a, or 2.0b on my external monitor?

So, I bought a LG 27UL500-W monitor, loving it so far.

It says it supports HDR 10. And it has 2x HDMI 2.0 ports, and 1x DisplayPort 1.2.

As I understand a DisplayPort 1.2 transfers data faster/more than a HDMI 2.0 port, so normally I would go for that, but apparently a DP1.2 does not support HDR. HDMI 2.0 does instead, BUT only from HDMI 2.0a onward. But how can I tell if I the HDMI port version is 2.0/2.0a/2.0b? How can I verify HDR can indeed work on the monitor? Even though I don't really have any HDR content that I know of, that I can test.

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Some secondary questions that dual-monitor users might be able to answer:

Should I color-calibrate the monitor? Should I get a .icc profile from somewhere or should I attempt to do it myself?

The task bar on the second monitor has all my pinned programs on it and that's good, but on the far right, near the clock, it is missing a few icons and functionalities that I have on the main task bar, like the show desktop button on the far right, the keyboard language icon, battery status icon, speakers icon, and little upward arrow to show the tray with the hidden icons. How can I get this stuff on the other monitor's task bar? I'm on Windows 10.

Lastly, official drivers are dated 28/06/2019 on the manufacturer's website, but when I try to install them, it says they are successfully installed, but they are still the stock ones from 18/3/2019. Not sure about this...

 

The HDR on your monitor is meant only for use with game consoles. With no local dimming zones and peak brightness of just 300 nits, it fails to meet even the most basic DisplayHDR 400 standard for use with Windows. HDR on Windows stinks. It's passable on monitors that support the much more stringent DisplayHDR 1000 standard, but that's about it.

 

Hmm I see. But regardless, even if it's meant for just game consoles, I still would like to find out about the HDMI port. At least I wanna make sure that the port I'm using is technically capable of transmitting some HDR content, even if it is the lousiest there is.