This is the Japanese NES model 2 control deck. The Japanese version is the only one that had the composite port. US, EU, AUS versions only had RF ports.
The side port is used for the JPN light gun & 3D goggles. The mould was flatten to allow the Famicom Disk System connection.
NOTE: AV cables & AC Adapter was sold separately.
#nintendo #famicom #nes