Comment by ianburrell

2 hours ago

USB4 includes standardization of Thunderbolt 3. It allows tunneling USB data, DisplayPort, and PCIe. It also adds 40Gbps and 80Gbps speeds.

Thunderbolt 4 is profile with USB4 tunneling, 40Gbps speed, and 100W power. Thunderbolt 5 is 80Gbps and 240W power.