USB Host Shield use GPIN and GPOUT

Projects Programming
1

Hello everyone, I have a USB Host Shield SparkFun model,
how do you program the pin GPIN and GPOUT?
You can connect the servo?

Thanks Regards David.

2

Hello everyone, I have a USB Host Shield SparkFun model,

"But, I don't want to post a link. I expect you to go find my piece of hardware."

how do you program the pin GPIN and GPOUT?

No idea what you are talking about. See above for a hint.

You can connect the servo?

Sure. What servo? Connect it to what?

3

Hello Thank you for having responded to me, I'm Italian and I do not speak English.
I have a usb host shield, I have to use the pin shield GPIN GPOUT but do not know how to do.

does anyone know how you use pin?

4

I have a usb host shield

Great. Post a link to it.

I have to use the pin shield GPIN GPOUT

Why?

What is connected to the USB Host shield?