The version 1.1 of Wemos D1 mini PRO board has CP2104 as USB to UART bridge.
To get started with this board and/or first stepts for using Arduino IDE, follow the link on wemos or search on google on that, plenty of examples to choose from.
https://wiki.wemos.cc/tutorials:get_started:get_started_in_arduino.
Also, you need to install the USB driver for CP2104 USB to UART bridge from Silicon Labs. Choose your version according to your operating system: Windows 10, 7 -32b or 64b, Linux, Android…
https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers
Currently, this board is no loger produced, but you cand find the version 2.0 from Wemos
https://wiki.wemos.cc/products:d1:d1_mini_pro
ESP8266 Wemos D1 mini PRO v1 – CP2104 USB driver