Summary

This is a replacement base for the Intel NUC mini PC. It incorporates a spot to hold the hard disk and controller that comes with the NUC as well as an added Syba Realtek Gigabit Ethernet Mini PCIe card, cables, and RJ45 connector.

This was designed for, and used on, a pair of fourth-generation NUCs, model D54250WYKH. Your mileage may vary with other models.

It's not perfect but it works as-is. If you'd like to tinker on it, here's the model on Tinkercad: https://www.tinkercad.com/things/6cVLKjO38uJ