3 connected to yn-622N with 2 flash sb910 and yn568ex YongNuo, everything works perfectly and pilot distance. put the high-speed sync. by cons with SB700 it took to zoom auto to fonctionne.C'est that in my opinion the best value / market price for power manage its flash in TTL or manual device in radio since his duty dive into camera menus. However, attention to compatibility with other flash (pixel king magician ...) that I could check