Electronic – Does anyone know what this smd chip is

I just found a project on github, that uses an arduino to read and write the EEPROM of Stratasys Cartidges. Theres a UI to set whatever values you want to the EEPROM: https://github.com/slaytonrnd/CartridgeWriter

If following the trace in my own X-Plorer guitar's board tells me anything, I believe it to be the USB controller.