With our Original Prusa i3 MK3, we have introduced a logic board called Einsy RAMBo. It works on 24V and uses Trinamic drivers for motors, allowing for super silent printing and much more.
Organizing all the cables can be a bit challenging, so we recommend you take your time. If there are any issues with your printer's wiring, they will be most likely discovered by the Selftest failed (MK3/MK3S/MK3S+) or when running the initial Wizard. For more information about the cable management, we recommend checking Electronics assembly of the assembly manual.