U2413 - Factory Color Calibration and ICC profiles

Hi, I have just purchased a U2413. I need it for Photography. In the documentation there is nothing about the DELL U2413 ICC profiles that has been installed together with the software. And please note that I do not have (yet!) any calibrator. I need to configure it in the best way without calibrator... using the factory calibration.

I hope you can make it clear to me how it works.

The monitor has different PRESET MODES, such as:
-Color space sRGB
-Color space aRGB
-Standard
-Game, etc

Which mode is the one that has been calibrated in the Factory?
What is the mode that I should use in order to have the color results?
I can see that there is DELL U2413 Color Profile, D6500 that is associated with the monitor (I can see it in the control panel). I think it's right to have this setting. Can you please confirm?

Should I configure the DELL U2313 ICC profile also in programs such as Canon Digital Photo Professional, or as long as it is in Windows it's not needed? [Point 3 of this screenshot]. I can see that if I put the DELL profile in Canon DPP the colors of the photos appear much colder.

Thanks