I bought the flash first, and added NEW  the uprated Godox PB 960 power pack, the Y adapter and the Nikon 3 pin plug which has never been used, when I was putting together a Nikon mirrorless system, which I then decided did not suit me, so I upgraded to a Fuji GFX 100, so  apart from the flash which has had very little use, it  is all now surplus to requirements.