There is a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit.
Driver: https://www.cdn.sparkfun.com/assets/learn_tutorials/1/2/1/SH32U4_driver.zip
Windows Driver Installation: https://www.learn.sparkfun.com/tutorials/pro-micro--fio-v3-hookup-guide/installing-windows
Linux / Mac Driver Installation: https://www.learn.sparkfun.com/tutorials/pro-micro--fio-v3-hookup-guide/installing-mac--linux











