Technology And Components; Usb Features; Usb 3.0/Usb 3.1 Gen 1 (Superspeed Usb) - Dell Latitude 5300 Service Manual

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Service manual (123 pages)

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Table Of Contents

100

101

102

Table of Contents

This chapter details the technology and components available in the system.

Topics:

•

USB features

•

USB Type-C

•

HDMI 1.4a

•

Power button LED behavior

USB features

Universal Serial Bus, or USB, was introduced in 1996. It dramatically simplified the connection between host computers and peripheral

devices like mice, keyboards, external drivers, and printers.

Let's take a quick look on the USB evolution referencing to the table below.

Table 1. USB evolution

Type

Data Transfer Rate

USB 2.0

480 Mbps

USB 3.0/USB 3.1 Gen 1

5 Gbps

USB 3.1 Gen 2

10 Gbps

USB 3.0/USB 3.1 Gen 1 (SuperSpeed USB)

For years, the USB 2.0 has been firmly entrenched as the de facto interface standard in the PC world with about 6 billion devices sold, and

yet the need for more speed grows by ever faster computing hardware and ever greater bandwidth demands. The USB 3.0/USB 3.1 Gen 1

finally has the answer to the consumers' demands with a theoretically 10 times faster than its predecessor. In a nutshell, USB 3.1 Gen 1

features are as follows:

•

Higher transfer rates (up to 5 Gbps)

•

Increased maximum bus power and increased device current draw to better accommodate power-hungry devices

•

New power management features

•

Full-duplex data transfers and support for new transfer types

•

Backward USB 2.0 compatibility

•

New connectors and cable

The topics below cover some of the most commonly asked questions regarding USB 3.0/USB 3.1 Gen 1.