It looks like a molex cable to me which is just power. It will probably be daisy chained together with 2 other of the same connector that then goes to your PSU. The other parts could be connected to something. If possible I would switch it out with Sata power anyway. I don't trust molex.
I'm right there with you, I was grinning the whole time watching him. So happy to see those upgrades coming through for McLaren. Lando deserves a good car.
Yeah Max was having a bit of a tantrum.