Micro-USB vs. USB4 2.0
Comparing 2 standards across 8 specifications. 8 key differences identified.
Micro-USB (Micro-B) was the dominant charging and data connector on non-Apple smartphones and small electronics from the late 2000s through the mid-2010s. Its USB 3.0 variant added a second, wider tab beside the standard 5-pin plug for extra SuperSpeed pins -- a design most phone makers skipped, keeping plain USB 2.0 Micro-B nearly universal in practice.
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
8 Parameters| Parameter / Spec | ||
|---|---|---|
|
Pin Count
|
5 (USB 2.0) or 10 (USB 3.0, wider stepped shape) | — |
|
Standard Base Dimensions
|
~6.85 x 1.8 mm | — |
|
Reversible
|
No | — |
|
Status
|
Largely superseded by USB-C | — |
|
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 |