Technical summary
Based on a MAX3421 chip, the board can support USB 2.0 devices/hosts (keyboard, mouse, joystick, game console controller, digital camera, USB flash drive, external hard drive, etc.). The board also includes connectors to accept modules in the TinkerKit format.
The use of male/female connectors lets you have the various I/O ports of the Arduino board brought out once the Arduino Ethernet Shield is plugged onto it.
https://store.arduino.cc/arduino-usb-host-shield
