The official Oculus Link headset cable.
USB-c on both ends
It's more expensive than third party cables (take in mind that nowadays you can use any USB 2.0 or 3.0 cable for Oculus Link), but it's a fibre optic rather than a copper cable, making it lighter, thinner and more flexible (and also allows it to be 5m long) compared to other cables.
Oculus Link allows you to connect an Oculus Quest to a gaming PC and use it as a PC VR headset, where games are run on the PC and streamed to the headset.
Wish it could be something more reasonable like 10m.