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The USB Host shield incorporates MAX3421E which is a separate chip that is mainly used to provide the USB host support to the Arduino board.Successful communication is carried out using this USB protocol when one of the devices acts like a host which indicates you cannot attach two keyboards for the communication because both are peripheral devices.When the mouse or keyboard is attached to the computer through a USB port, your system acts as a host and the keyboard acts like a peripheral (client).One is called the peripheral (client) and the other is called a host (server). What does this USB host mean? To understand this, you need to understand the USB protocol that comes with two types of devices.

With this USB host shield, you can connect any USB device with the Arduino boards.

Simply put, USB host shields provide the USB host capabilities to the Arduino boards.

Arduino USB host shield is used to connect a USB device with the Arduino Board.

Moreover, this shield is compatible with TinkerKit which projects you can plug this TinkerKit module with the Arduino Boards. This USB host shield is based on MAX3421E which is mainly known as the USB host controller that contains the analog circuitry and digital logic required to apply the USB full speed peripheral to USB specifications rev. With Arduino USB host shield you can interface the USB device to your Arduino board. In this post today, I’ll walk you through the Introduction to Arduino USB Host Shields.