Unable to connect my MacBook Air M2 via USB C to USB C port

Samsung – 49" Odyssey G9 G95C DQHD 240Hz 1ms(GtG) DisplayHDR 1000 Curved Gaming Monitor

That monitor has a resolution of 5120x1440 pixels, a refresh rate of 240 Hz, and support for 10-bit-per-channel color. It has a DisplayPort input, a HDMI input, and a micro HDMI input.

The USB ports do not seem to support video signals. It appears that they only provide a USB hub – and a fairly pointless one at that. Run one USB cable from the computer to the monitor, get one USB port on the monitor, in return. The monitor's ports might have USB-C connectors, but if they are designed as USB-only ports, then the monitor isn't going to be paying any attention to the DisplayPort Alt Mode signal that the Mac is willing to offer.

Two ways to hook up the monitor might be:

• USB-C (DisplayPort) to DIsplayPort adapter or adapter cable (from the Mac to the monitor)
• HDMI to HDMI cable (from a dock or hub to the monitor)

Note that your Mac probably will not support running this monitor at a 240 Hz refresh rate. The monitor's manual seems to indicate that the monitor can run at a refresh rate of 120 Hz or of 60 Hz.

MacBook Air (M2, 2022) - Tech Specs - Apple Support

MacBook Air (15-inch, M2, 2023) - Tech Specs - Apple Support

"Simultaneously supports full native resolution on the built-in display at 1 billion colors and:

• One external display with up to 6K resolution at 60Hz"

Use an external display with your MacBook Air - Apple Support

"Your MacBook Air can support one external display with up to 6K resolution at 60 Hz or 4K resolution at 144 Hz."