Chapter 10 Essential Periphreals

Chapter 10: Essential Peripherals

Overview

Modern computing devices utilize various peripherals to enhance capabilities. This chapter covers:

  • Common ports utilized in devices.

  • A list of standard peripherals.

  • Mass storage devices, including flash drives and optical discs.

Objectives:

  • Support multipurpose connectors.

  • Identify and install standard peripherals and removable storage devices.

Supporting Common Ports

Troubleshooting

  • Devices rely on the port they're connected to for functionality.

  • Verify issues involving both the device and its connected port before troubleshooting.

Types of Ports

  • Serial Ports: Use RS232 standard, prevalent in older devices (DB9 or DB25 connectors). Still included in CompTIA A+ objectives despite being outdated.

  • USB Ports: Most universal port type for peripherals. Operate through a USB host controller, connected to various USB devices. USB root hubs manage physical connections between devices. Supports a range of standards:

    • USB 1.1: Low-Speed (1.5 Mbps) and Full-Speed (12 Mbps).

    • USB 2.0: Hi-Speed (480 Mbps).

    • USB 3.0/3.1: SuperSpeed (5 Gbps or 10 Gbps).

    • Backward Compatibility: USB 3.0/3.1 devices can operate on USB 2.0 ports at lower speeds.

USB Standards and Compatibility

USB Host Controllers

  • Control connected devices and share power.

  • Limiting factors can affect performance based on how many devices are connected.

Connector Types

  • USB A and USB B: Used for host controller and peripheral connections respectively. Upgraded sizes for USB 3.0.

  • Color Coding: Identifies USB standards and ports.

    • USB 1.1: White

    • USB 2.0: Black

    • USB 3.0: Blue

    • USB 3.1/3.2: Teal/Red

USB Cables and Connectors

  • USB connectors include standard, mini, and micro versions.

  • USB Type-C connector enables bidirectional usage and supports higher speeds.

Troubleshooting USB Issues

  • Check if the issue is from the device or the port by testing with other devices.

  • Disable USB power management in BIOS/UEFI if issues arise with devices waking from sleep.

Common Peripherals

Input Devices

  • Keyboards: Key input device, supported by built-in drivers; specialized keyboards may require additional drivers.

  • Pointing Devices: Include mice and touchpads; multi-touch gestures enhance usability.

  • Biometric Devices: Provide fingerprint recognition and facial authentication.

  • Barcode and QR Scanners: Used for inventory and data input.

Output Devices

  • Monitors: Covered in Chapter 17.

  • Audio Devices: Include sound cards, speakers, and microphones.

Mass Storage Devices

  • Removable storage: Flash drives and optical media (CD, DVD, Blu-ray). Different formats and their usage details are included.

Optical Media Disc Types

  • CDs: First introduced for audio, with CD-ROM for data storage and formats supporting music playback.

  • DVDs: Much larger capacity than CDs (up to 16 GB); various formats exist depending on the ease of writing and reading.

  • Blu-ray: Highest quality and storage capacity for 4K video and high-def audio, up to 100 GB.

Conclusion

Familiarity with USB, Serial, and Thunderbolt interfaces is essential for computer troubleshooting. Understanding common input/output peripherals aids in connectivity and usability, supporting various user needs.