how can i tell if device is rated for 5v or 3.3v ?

Hello , thank you very much for your Attention Srnet , i am sorry for the lack of detail .

this is the exact connector that i have :
connector

you can ignore all the nearby components , my question is whether or not it can slide on the surface . because the connector is in the middle of the board and not on any of the edges .

  • i am not intending to sell this , neither is it for a DIY project . we are constructing these hands for local amputees . so it must be long lasting and the design has to be as reliable as it can be .

  • what about the clearance and the routing width sir ?