Samsung Electronics GmbH
Hi corsin-brand,
the consortium behind the HDMI standard has for some years no longer allowed the use of version numbers to specify an HDMI connection more precisely. Instead, only the actually supported features and functions according to a specific standard may be advertised. For this reason, it is not possible to make a blanket statement as to whether a particular model is generally HDMI 2.1 capable. However, the TV has the following HDMI functions: FRL (4K@120Hz) on HDMI port 4, 4K@60Hz, 2K@120Hz, VRR, Dynamic Metadata (HDR10+), ALLM (Auto Game Mode) and eARC on HDMI port 3.
Kind regards from Schwalbach,
Your Samsung Service Team

If I understand the Samsung product page correctly, only the HDMI port 4 has 4K@120 (= HDMI 2.1)
https://www.samsung.com/ch...