Pixel TF-322 Flash Hot Shoe I-TTL Sync Adapter with Extra Pc Sync Port Dedicated for Nikon Dslr & Flashgun Camera Accessories Nikon Hot Shoe Shoe base converted to support Nikon onboard flash trigger, support I-TTL function Support center has triggered flash trigger other brands Conversion of the pc port, it can trigger studio lights and hot shoe flash via cable When the pc line connection can be a good lock to prevent the cable detachment. Very light,so it is convenient to carry.