USB (Universal Serial Bus) is a widely used interface for connecting various devices to computers and other electronic devices. It plays a crucial role in the Raspberry Pi ecosystem, allowing users to connect peripherals such as keyboards, mice, storage devices, cameras, and more. Understanding the USB capabilities of the Raspberry Pi is essential for maximizing its potential and expanding its functionality.

The Raspberry Pi has multiple USB ports, usually USB 2.0 or USB 3.0, depending on the model. These ports provide power and data transfer capabilities, making them versatile for a wide range of applications. However, it's important to note that the Raspberry Pi's USB ports share bandwidth with other peripherals, so it's crucial to manage the USB load carefully to avoid performance issues.

Examples:

1. Connecting a USB Keyboard:

   • Connect the USB keyboard to one of the available USB ports on the Raspberry Pi.
   • The Raspberry Pi should automatically recognize the keyboard and enable its functionality.
   • Use the keyboard for input in various applications or the command line interface.

2. Mounting a USB Storage Device:

   • Connect the USB storage device to one of the USB ports on the Raspberry Pi.
   • Open the terminal and run the command: lsblk to list the available storage devices.
   • Identify the USB storage device from the list (e.g., /dev/sda1).
   • Create a mount point directory using the command: sudo mkdir /mnt/usb.
   • Mount the USB storage device using the command: sudo mount /dev/sda1 /mnt/usb.
   • The USB storage device is now accessible at the mount point directory (/mnt/usb).