This is a cover and cable retainer for a USB Type-C hub. This particular hub is sold under many brand names - I got this on Amazon.

This is a TPU cover that stretches over the HDMI connector on the bottom, and holds the USB-C cable, to protect the large HDMI socket and the cable from getting damaged when I throw this in my backpack along with the computer and other items.

It does need to be TPU, because it needs to stretch slightly as the hub is inserted, and this helps to keep the cover in place during handling. It can be easily removed to access the HDMI connector if necessary.

Creality

CR-10

No

No

30%