You can connect external speakers or headphones to the monitor's 3.5 mm jack audio output, as this serves as an audio out. The monitor has no built-in speakers, but you can output sound via this output.

Yes, a DisplayPort cable is included in the scope of delivery. The package contains a DisplayPort cable together with the power cable and manual.

Ich habe den Bildschirm nicht mehr, aber gemäss Testbericht: „ The G50D competes with other 27-inch entry-level gaming monitors, such as the Dell G2724D and the MSI G274QPF-QD. Though it doesn't have many added features, it has a few extras for gamers, such as shadow enhance controls and virtual crosshairs.“

The monitor has an audio output in the form of a headphone connection. An external power supply unit is included, along with an AC power cable and a DisplayPort cable. A power supply unit is therefore included.

This monitor doesn't have speakers.

This monitor is compatible with a monitor arm, but it requires a VESA 100 mount to do so.

Hi, no this one is not curved, the curved one is cheaper, see link Samsung Odyssey G5 G55C (2560 x 1440 pixels, 27")

Yes, the Samsung Odyssey G5 has a 3.5 mm jack connection, but only as an audio out, i.e. an output via which you can connect headphones or external speakers.