# item.guide
Side-by-Side Comparison USB

USB 3.2 Gen 2x2 vs. USB-B

Comparing 2 standards across 8 specifications. 8 key differences identified.

Comparing:
USB 3.2 Gen 2x2
USB-B
USB 3.2 Gen 2x2 →

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.

View full USB 3.2 Gen 2x2 spec sheet →
USB-B →

USB-B (Standard-B) is the squarish connector historically used on printers, scanners, and external hard drives -- the peripheral-side counterpart to USB-A. A 9-pin SuperSpeed variant with a distinctive stacked upper tab was added for USB 3.0, though USB-C has since displaced Standard-B in most new peripheral designs.

View full USB-B spec sheet →

Specification Comparison Table

8 Parameters
Parameter / Spec
USB 3.2 Gen 2x2
USB-B
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+, stacked SuperSpeed tab)
Standard Base Dimensions
— ~11.1 x 7.0 mm
Reversible
— No
Typical Role
— Peripheral-side port (printers, scanners, external drives)

Other Alternatives to Compare

Compare USB 3.2 Gen 2x2 vs. Micro-USB → Compare USB 3.2 Gen 2x2 vs. Mini-USB → Compare USB 3.2 Gen 2x2 vs. USB 1.1 → Compare USB 3.2 Gen 2x2 vs. USB 2.0 → Compare USB 3.2 Gen 2x2 vs. USB 3.2 Gen 1 → Compare USB 3.2 Gen 2x2 vs. USB 3.2 Gen 2 → Compare USB 3.2 Gen 2x2 vs. USB Power Delivery → Compare USB 3.2 Gen 2x2 vs. USB-A → Compare USB 3.2 Gen 2x2 vs. USB-C → Compare USB 3.2 Gen 2x2 vs. USB4 → Compare USB 3.2 Gen 2x2 vs. USB4 2.0 →