Not sure if this is the correct place to post but I recently came into a Tech 21 Sansamp RBI. The unit came without its original power cable and when I plug it in to try to use it there’s a real nasty buzzing noise (I think this I a power issue as I don’t think I have the right power lead) does anyone know / could somebody link me the cable I would need to power this properly? Have added a picture of the power Input for more context