All four ports support Thunderbolt 4 - if you scroll down to "Interfaces" on the product specs page there's a graphic showing everything that's supported.

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koalaman 6 hours ago | parent [-]

nice! Thanks! I had no idea USB4 and Thunderbolt were equivalent.

	▲	ciupicri 3 hours ago \| parent [-]
		They aren't equivalent. The "shape" of the port is the same, it's (USB) Type-C. Though as far as I know most of the time you can use USB4 peripherals with TB4 ports.