# item.guide
Side-by-Side Comparison USB

USB 3.2 Gen 2 vs. USB-A

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

Comparing:
USB 3.2 Gen 2
USB-A
USB 3.2 Gen 2 →

Originally released as USB 3.1 in July 2013, this 10 Gbit/s tier used more efficient 128b/132b encoding than USB 3.0's 8b/10b. It was renamed USB 3.2 Gen 2x1 in 2017 alongside USB 3.0's rename to Gen 1x1 -- both generations kept identical real-world hardware, with only the marketing name changing.

View full USB 3.2 Gen 2 spec sheet →
USB-A →

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.

View full USB-A spec sheet →

Specification Comparison Table

8 Parameters
Parameter / Spec
USB 3.2 Gen 2
USB-A
Original Name
USB 3.1 Gen 2 (July 2013) —
Current Name
USB 3.2 Gen 2x1 (also marketed as "USB 10Gbps") —
Max Bandwidth / Data Rate
10 Gbit/s —
Encoding
128b/132b (more efficient than USB 3.0's 8b/10b) —
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

Other Alternatives to Compare

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