Module 6 Supporting I/O Devices

Overview

This lecture covers installing, configuring, and troubleshooting I/O (input/output) devices, including peripherals, adapter cards, and video subsystems, with a focus on best practices and common issues.

Principles of Supporting I/O Devices

• I/O devices can be internal or external; principles apply to both.
• Every device is managed by software; always follow manufacturer instructions.
• Devices may need application software to function fully.
• Devices operate no faster than the port allows.
• Use an administrator account for installation on Windows.
• Update drivers or firmware to solve some issues.
• Install only one device at a time.

Peripheral Connection Standards and Ports

• USB supports up to 127 daisy-chained devices and is hot swappable.
• USB uses four wires: two for power, two for communication.
• USB standards include usb4, SuperSpeed, High Speed, and original USB.
• Video ports include VGA, DVI, DisplayPort, and HDMI.
• Thunderbolt, eSATA, and Lightning are additional connection options.
• PS/2 ports are not hot swappable and require a restart after plugging in devices.

Installing and Configuring Devices

• Read manufacturer's instructions before installation.
• Ensure drivers are compatible with your operating system.
• Enable motherboard ports in BIOS/UEFI as needed.
• Windows auto-installs generic drivers for standard USB mice/keyboards.
• Special features require additional software/drivers.
• Use Device Manager to enable, disable, or uninstall devices.

Installing Adapter and Expansion Cards

• Verify the card fits the slot and drivers are available for your OS.
• Backup important data before installation.
• Disable onboard ports if replacing them in BIOS/UEFI.
• Wear an anti-static strap and unplug power before installation.
• Secure the card, connect cables, replace the cover, and reboot if necessary.
• Use Device Manager to verify device function after installation.

Video Subsystem Support

• Monitor and video card/video port are necessary for output.
• Monitor types include LCD, OLED, and projectors.
• Adjust monitor settings via buttons, function keys, or Windows utilities.
• Drivers and monitor settings affect video quality and resolution.

Troubleshooting Common I/O Device Problems

• Start with the least invasive solution.
• For keyboard issues, check if Num Lock is on.
• Use Device Manager for driver updates, rollbacks, or reinstallations.
• Audio issues: check volume, cables, and update drivers.
• Video/display problems: check cable connections, monitor settings, and update drivers.
• Power or display issues can be resolved by verifying power/cables and swapping components.
• For laptops, use external monitors to diagnose LCD issues.

Key Terms & Definitions

• I/O Devices — Devices that provide input and output functions for a computer.
• Firmware — Software programmed into hardware devices.
• Hot Swappable — Devices that can be connected or disconnected without shutting down the computer.
• BIOS/UEFI — Firmware interfaces for hardware initialization and configuration.
• Device Manager — Windows utility to manage hardware devices.
• Pixel — The smallest unit of a digital image or display.

Action Items / Next Steps

• Review Table 6.1 on data transmission speeds for peripheral connections.
• Practice using Device Manager to troubleshoot and update drivers.
• Familiarize yourself with USB versions and video port types for the exam.
• Complete assigned readings if provided by instructor.