USB 3.2 Gen 2x2 vs. USB Power Delivery
Comparing 2 standards across 8 specifications. 8 key differences identified.
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 Power Delivery (USB PD) is a separate negotiation protocol governing how much power flows over a USB-C cable -- independent of the cable's data speed. Standard Power Range tops out at 100W (20V/5A); PD 3.1's Extended Power Range (2021) raised that ceiling to 240W (48V/5A), requiring cables with a built-in identification chip.
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 | — |
|
PD 1.0
|
— | 2012 -- up to 60W |
|
PD 2.0
|
— | 2013 -- up to 100W (Standard Power Range, 20V/5A) |
|
PD 3.1 (EPR)
|
— | 2021 -- up to 240W (Extended Power Range, 48V/5A) |
|
EPR Cable Requirement
|
— | Built-in E-Marker identification chip |