Comment by p_l
4 hours ago
USB4 is essentially thunderbolt with some new features and some features being optional instead of mandatory.
4 hours ago
USB4 is essentially thunderbolt with some new features and some features being optional instead of mandatory.
A very noticeable feature is that USB4 can tunnel USB3, which means it works like an USB hub, instead of an external PCIe USB controller (like in Thunderbolt). USB2 is still just physically separately transported over the D+/D- pins.