Peripheral Cables - CompTIA A+ 220-1101 - 3.1

USB Evolution and Standards

This section discusses the evolution of USB standards from 1.1 to 3.2, highlighting changes in speeds, cable lengths, and connector types.

USB 1.1 and 2.0

• USB 1.1 had low speed at 1.5 Mbps and full speed at 12 Mbps with varying cable lengths.

• USB 2.0 increased speed to 480 Mbps over a maximum cable length of 5 meters.

USB 3.0

• USB 3.0, known as super speed USB, supports up to 5 Gbps over approximately a 3-meter cable.

• Introduced new connectors like standard-B plug for higher throughput support.

USB-C Connector

• USB-C is reversible for easy connection without specific orientation requirements.

• Supports various signal types beyond data transmission, such as video signals.

Evolution to USB 3.2

• Renaming conventions with updates; e.g., USB 3.0 became USB 3.1 Gen 1.

• Introduction of USB 3.2 doubling bandwidth using additional communication lanes.

Thunderbolt Connections

This part explores Thunderbolt connections' evolution, capabilities, and compatibility with different devices.

Thunderbolt Versions

• Thunderbolt version one offered two channels at speeds of up to10 Gbps each.

• Thunderbolt version two aggregated channels for a total throughput of up to20 Gbps.

Thunderbolt Version Compatibility

• Thunderbolt version three utilizes the versatile USB-C connector for enhanced speeds.