Side-by-Side Comparison
USB
USB-C vs. USB4 2.0
Comparing 2 standards across 9 specifications. 9 key differences identified.
Comparing:
USB-C
USB4 2.0
USB-C is the reversible, oval 24-pin connector now used across USB 2.0 through USB4 and Thunderbolt. It's the only connector required for USB4, and under EU law it became mandatory on most new phones, tablets, and cameras sold in the EU by the end of 2024, with laptops following by April 2026.
USB4 2.0, released September 2022, doubles USB4's ceiling to 80 Gbit/s symmetric -- or an asymmetric 120/40 Gbit/s split favoring one direction for high-bandwidth uses like external displays. It requires new cables explicitly rated for the higher speed; existing USB4 v1 cables aren't guaranteed to reach it.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Pin Count
|
24 (symmetrical, double-sided) | — |
|
Standard Base Dimensions
|
~8.34 x 2.56 mm | — |
|
Reversible
|
Yes | — |
|
EU Mandate (phones/tablets/cameras)
|
End of 2024 (Directive 2022/2380) | — |
|
EU Mandate (laptops)
|
April 28, 2026 | — |
|
Released
|
— | September 2022 |
|
Data Rate (symmetric)
|
— | 80 Gbit/s |
|
Data Rate (asymmetric)
|
— | 120 / 40 (split favoring one direction) Gbit/s |
|
Connector Required
|
— | USB-C only, with cables explicitly rated for USB4 2.0 speeds |
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