Side-by-Side Comparison
USB
USB 3.2 Gen 2x2 vs. USB-A
Comparing 2 standards across 8 specifications. 8 key differences identified.
Comparing:
USB 3.2 Gen 2x2
USB-A
USB 3.2 Gen 2x2, part of the USB 3.2 specification released in September 2017, is the only tier in the 3.2 family that's genuinely new hardware rather than a renamed predecessor -- it doubles Gen 2's 10 Gbit/s by running two lanes simultaneously, reaching 20 Gbit/s, but only over USB-C connectors and cables wired for it.
USB-A (Standard-A) is the flat rectangular connector on host ports -- computers, chargers, hubs. It used 4 pins for USB 1.x/2.0 speeds; a 9-pin variant, adding 5 SuperSpeed contacts, extended it to USB 3.0+ in 2008 without changing the external shape or requiring a new socket design.
Specification Comparison Table
8 Parameters| Parameter / Spec | ||
|---|---|---|
|
Released
|
September 2017 | — |
|
Max Bandwidth / Data Rate
|
20 (2 lanes x 10 Gbit/s each) Gbit/s | — |
|
Connector Required
|
USB-C only (dual-lane wiring not present in USB-A/B) | — |
|
Marketing Name
|
USB 20Gbps | — |
|
Pin Count
|
— | 4 (USB 1.x/2.0) or 9 (USB 3.0+, adds 5 SuperSpeed contacts) |
|
Standard Base Dimensions
|
— | ~12 x 4.5 mm |
|
Reversible
|
— | No |
|
Typical Role
|
— | Host / downstream-facing port |
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