You can easily distinguish Thunderbolt 4 and USB4 cables and ports by looking for the small lightning bolt logo. This logo is found on both the ports and cables. In contrast, USB4 cables display ...

Meanwhile, the USB-IF also has logos for the maximum charging speed – in the case of USB4 version 2.0, i.e. 240 watts. Thunderbolt 5 does not have this; only 140 watts are guaranteed.