There are three other cables using the same rigid rounded sleeving with a ferrite bead, the ATX12V connector, the EPS12V connector and one standard peripheral connector. They also use better connectors compared to the standard connector used by other power supplies.
This power supply comes with an external ground cable (using a thick 12 AWG wire and a gold-plated terminal), for you to connect it to the metallic chassis from your case. This is the first power supply we’ve seen coming with this feature. Inside the power supply this cable is connected to the DC ground, i.e., connected together with all black wires used by the power supply cables.