USB C Video running at 30 Hz in 4K

Correcting my previous response, the Apple adapter also does not support 4K60Hz.I tested the adapter for Apple and it also supports 30Hz. The type C direct HDMI converter uses the DP signal of the type C interface, which supports a resolution of 4K60Hz. If a converter with HUB function is used, the HDMI signal is converted via the USB signal, which only has a bandwidth of 5G and does not support 4K60Hz.