How to use the USB Host shield to read/write hex data from/to usb c/ device?

Hello,

I'm using the USB Host shield from sparkfun:

And the Arduino Mega, I already solder the pins and it's already stacked up with the board.

I'm trying to figure out how to read and write hex data from a connected device.

by example, I want to send the hex code A9A2 and it will reply with B9B1.

I already installed the library

and run the acm_terminal example by I'm stucked in there.

Any help will be appreciated.

I'm using the USB Host shield from sparkfun:
SparkFun USB-C Host Shield - DEV-21247 - SparkFun Electronics

And the Arduino Mega, I already solder the pins and it's already stacked up with the board.

That shield is not compatible with the Mega as it has the SPI pins connected to 11, 12, 13, which is acceptable for the UNO (and other ATmega328p based products) but fails on most other boards.