Waveshare 4 Port USB HUB Board Compatible with Raspberry Pi Features USB to UART Converter

This 4 port USB hub providing more USB capability to your Pi, features USB to UART converter for easy serial communication
USB HUB interface (bottom): for connecting the HUB to the Raspberry Pi USB port, for Zero/Zero W/Zero WH, connected via Micro USB connector; Also compatible with Raspberry Pi B+/2B/3B/3B+/4B, connected via Micro USB cable
With 4 USB Ports, compatible with USB2.0/1.1; Onboard USB to UART, with enable/disable switch, convenient for Raspberry Pi serial debugging and avoiding conflict
Operating voltage: 5V, Dimension: 65mm × 30mm, Mounting hole size: 3.0mm; Onboard multi indicators, for monitoring the status of power, USB to UART, and each USB port
There is some usage resource and notice on the online user manual, please refer to while using