The current state of the USB / Thunderbolt standards are very confusing so I created this reference sheet:
| Standard | Port /
Connector End |
Power | USB Type | Speed | Cable | Alais | Display Port | Comments | Daisy Chain | Protocals | Displays | Intel Controller |
| USB-A | Square end must be inserted correctly | 7.5 watts | Gen 1 | 5 Gbps | USB 3.0, USB 3.2 Gen 1 | |||||||
| USB-C | USB-C Connector Rounded – insert in any orientation | 100 watts | Gen 2 | 10 Gbps | USB 3.1, USB 3.2 Gen 2 | |||||||
| Gen 2×2 | 20 Gbps | USB 3.2 | ||||||||||
| TB-3 | USB-C Connector Rounded – insert in any orientation | 100 watts | Gen 2 | 40 Gbps | TB-3 certified | Also supports USB 3.1 Gen 2 @ 10Gbps | HBR3 | Certified Cable with TBB3 – ensure 40Gbps | Six TB3 devices | PCI Express – supports External GPU & Display Port | 2 4K, 1 5K 60Hz,1 4k @120Hz, 1 apple 6K with compression | Certified by Intel & can have 4 ports on each computer |
| USB-4 | USB-C Connector Rounded – insert in any orientation | 7.5 watts is minimum standard – check specs | Gen 2 | 40 Gbps | Check specs on cable | Not all USB-4 are certertified. USB 4 may only support 20 Gbps, 1 4k display and 7.5W power | PCI Express – supports External GPU & Display Port | Two 4K, one 5K 60Hz,1 4k @120Hz, 1 apple 6K with compression | Intel royalty free TB3 – | |||
| TB-4 | Minimum 15W | USB-4 | TB-4 certified | Docs can have 4 ports. TB4 Computers and cables are compatible with TB3 cables and accessories. Apple silicon supports TB. | Two 4K displays or one 8k display | Certifiedby Intel & can have 4 ports on each computer |