Professionally SMT assembled board.
Additionally you will need Raspberry Pi Zero and a HDMI Mini to HDMI A cable.
Soldering is required to install the board to Amiga 600. If you want to access the settings menu of the adapter you have to solder a push button to the board.
Software for the board is available on RGBtoHDMI project page.
Just extract the software to root of SD-card. No configuration of the software is needed.