The add-ons include: expansion board, metal case, power supply, and cooling fan. easily make a mini-computer if you happen to get a compute module

Ideal choice for Raspberry Pi Compute Module, either study / evaluation, or industrial applications

Compute Module PoE Board: dual CSI camera ports, PoE (Power over Ethernet) feature, versatile peripheral interfaces

Ingenious cut-out, highly matching the master board, along with clear labels, easy to use

Comes with cooling fan, allows being controlled by software via GPIO, or being powered directly from 5V supply

smooth and clean metal bottom surface, with mounting holes on both sides, suitable for industrial applications

binocular vision, PoE powered Raspberry Pi projects, or other industrial context