USB 3.1 vs USB 3.2: Key Differences Explained

This article clarifies the differences between USB 3.1 and USB 3.2, two common versions of the Universal Serial Bus (USB) standard.

Introduction to USB

USB, which stands for Universal Serial Bus, is a standard interface for connecting peripherals to computers. It supports peer-to-peer communication, typically between a host (like a computer) and a peripheral device (like a printer or external hard drive). USB defines the requirements for connection, communication, and power supply between PCs and these peripheral devices.

Several versions of USB exist, including v1.0, v2.0, v3.0, v3.1, and v3.2. Each version supports different data transfer rates.

USB 3.1

• Speed: 5 Gbps (USB Gen1, Superspeed), 10 Gbps (USB Gen2, Superspeed+)
• Release Year: 2013
• Backward Compatibility: Compatible with USB 2.0 and USB 3.0, but may require adapters.
• Power Consumption: 5 A
• Versions: USB 3.1 Gen1 and USB 3.1 Gen2
• Connectors: USB 3.1 Gen2 can transfer data at up to 10 Gbps over USB-type-A and USB-C connectors.

USB 3.2

• Speed: 5 Gbps (Gen1), 10 Gbps (Gen2), 20 Gbps (Gen 2x2)
• Release Year: 2017
• Backward Compatibility: Compatible with previous USB versions.
• Power Output: Up to 100W
• Versions: USB 3.2 Gen 1, USB 3.2 Gen 2, and USB 3.2 Gen 2x2
• Also Known As: SuperSpeed USB
• Connector: Uses a 24-pin USB Type-C connector.

USB 3.1 vs. USB 3.2: Key Differences

The following table summarizes the key differences between USB 3.1 and USB 3.2: