lsusb

Overview

The lsusb command lists USB devices connected to the system. It provides information about USB buses and the devices connected to them.

Syntax

lsusb [options]

Common Options

Option Description
-v Verbose mode
-t Show USB device tree
-s [[bus]:][devnum] Show only devices with specified bus/device numbers
-d [vendor]:[product] Show only devices with specified vendor/product ID
-D device Show only specified device
-V Show version
-h Show help message

Key Use Cases

  1. Device identification
  2. Hardware troubleshooting
  3. System inventory
  4. Driver verification
  5. Device monitoring

Examples with Explanations

Example 1: Basic List

lsusb

Show all USB devices

Example 2: Device Tree

lsusb -t

Show USB device hierarchy

Example 3: Verbose Info

lsusb -v

Show detailed device information

Understanding Output

Basic format:

Bus XXX Device XXX: ID XXXX:XXXX Vendor Product

Example:

Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub

Common Usage Patterns

  1. Find specific device:

    lsusb -d vendor:product

  2. Check device tree:

    lsusb -t

  3. Monitor changes:

    watch lsusb

Performance Analysis

  • Quick execution
  • USB bus scanning
  • Device enumeration
  • Database lookup time
  • Real-time information

Additional Resources

Device Categories

  1. Storage devices
  2. Input devices
  3. Printers
  4. Cameras
  5. Network adapters

Best Practices

  1. Regular device checks
  2. Update USB database
  3. Monitor connections
  4. Document devices
  5. Check power usage