The Nikon GP1-CA10A cable is a 10-pin connecting cable for the GP-1 & Nikon D4, D800, D3X, D3S, D3, D700, D300S, D300, D2X, D2XS, D2 Hs or D200 camera. The GP1-CA10A differs from the CP1-CA10 in that the cable is more flexible & durable & the locking nut has been increased in size, with a white alignment mark in order to make connection easier. The cable direction & length has also been slightly changed for ergonomic reasons.