Difference between USB 3.1 Gen1 and USB 3.1 Gen2

This page compares USB 3.1 Gen1 vs USB 3.1 Gen2 and mentions difference between USB 3.1 Gen1 and USB 3.1 Gen2.

The USB stands for Universal Serial Bus. It is interface similar to RS232 and RS485 but supports higher data rates at various distances. USB supports peer to peer communication. In this type of interface, communication takes place between host and peripheral and not between two hosts (or peripherals). The USB standard defines specifications for cables, connectors and protocols. It mentions requirements for connection, communication and PS (power supply) between PCs and peripheral devices. There are various versions of USB which include v1.x, v2.x and V3.x. Each of these versions support different data rates. Both USB 3.1 Gen1 and Gen2 supercedes USB 3.0 standard.

Key messages of USB 3.1

• It offers requirements for various applications such as storage, display, docking etc.
• It makes it possible to move content across various devices conveniently and quickly.
• Backwards compatible with existing 5Gbps hubs/devices and USB 2.0 based products.
• It makes it possible for devices from different vendors to interoperate.

USB 3.1 Gen1

• It is also known as SuperSpeed USB.
• Transfer rate: 5 Gbps
• USB 3.1 Gen 1 and USB 3.0 terms are synonymous terms.

USB 3.1 Gen2

• It is also known as SuperSpeed+ USB or SuperSpeed USB 10Gbps.
• Transfer rate: 10 Gbps

Tabular difference between USB 3.1 Gen1 and USB 3.1 Gen2

Following table summarizes difference between USB 3.1 Gen1 and USB 3.1 Gen2.

Features USB 3.1 Gen1 USB 3.1 Gen2
Other name SuperSpeed USB (also known as USB 3.0 ) SuperSpeed USB 10Gbps
Transfer rate 5 Gbps 10 Gbps

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