This is a 4-port USB hub that provides additional USB functionality. It has a USB to UART converter to communicate easily
On-board multi-indicator, power, USB to USB, and each USB port
4 USB ports for USB 2.0/1.1
Onboard USB to UART and enable/disable to debug and avoid competition
It can work with various versions. The board size is designed to perfectly fit /zerow/zerowh