USB4 size
USB4
20, 40 or 80 Gbit/s; USB-C connector only
USB4 is USB-C only and is based on Thunderbolt 3, which Intel contributed to the specification. It supports tunnelling DisplayPort and PCIe over the same cable, which is what allows a single connector to carry video, data and power. Written without a space — USB4, not USB 4 — which is the official styling. USB4 Version 2.0 adds an 80 Gbit/s mode.
The numbers
- Specification
- 20, 40 or 80 Gbit/s; USB-C connector only
- Defined by
- USB-IF
USB
| Size | Millimetres | Inches |
|---|---|---|
| USB-C connector | 8.34 × 2.56 mm | 0.33 × 0.10 |
| USB4 ← | 20, 40 or 80 Gbit/s; USB-C connector only | — |
| USB 3.x | 5, 10 or 20 Gbit/s depending on generation | — |
| USB 2.0 | 480 Mbit/s, 2.5 W (500 mA at 5 V) | — |
Common questions
- What size is USB4?
- 40 Gbit/s typical, built on the Thunderbolt 3 protocol.
- Which standard defines USB4?
- USB-IF
Related pages
- USB-C connector size 8.34 × 2.56 mm
- USB 3.x size 5, 10 or 20 Gbit/s depending on generation
- USB 2.0 size 480 Mbit/s, 2.5 W (500 mA at 5 V)
Sources
- Official vendor product documentation — At One Place