j1 or j2 on mux_sh board

hello, i have a question about mux_sh board connection

on some picture, from right to the left, mux_sh connection is : j1 to j2 and j1 to j15

and on other picture, it's j2 to j2 and j1 to j15

is there a diference between j1 and j2 on mux_sh board?

thank for you answers

Hi there,

J1 and J2 are power connector and have the same function