4 pin Nikon hot-shoe proprietary connector
This is proprietary (non-standard, product specific ) connector. A proprietary connector is the special connector that can only be used with a certain device(s).
- Nikon TTL Hot-shoe interface pinout

This is the 4 pin Nikon hot-shoe proprietary connector

The pinouts for the 4 pin Nikon hot-shoe proprietary connector are:
4 pin Nikon hot-shoe proprietary connector is compatible with:
Nikon devices:
- Nikon D1, D100, D100, D1H, D1X, D2H, D2Hs, D2X, D2Xs, D3000, D3100, D3100, D3100, D40, D40x, D50, D60, D70, D7000, D7000, D7000, D70s, D70s, D80, D80
- Nikon E3
- Nikon NASA F4
- Nikon VCC113