The board requires a 5V power supply. It can be powered directly from the GBS-8200 or using an external power supply. Jumper J4 allow to select between composite sync (pin 1-2) suitable for the GBS-8200 and separate sync (pin 2-3) suitable for 15KHz capable monitors. Connector J5 can be used for internal connections.

GBS-8200 RGBS to VGA Converter If you want to hook-up your retro console(s) via RGB SCART or component video YUV to a VGA/SVGA monitor or flatscreen television with VGA input you can use a board called a GBS 8200 which is the cheapest option in my opinion, but will require a bit of technical knowhow to get this hooked-up.