There are 10 SLM1608/1606 LED matrix display units used to create the Ethernet controlled LED matrix. The entire device could be easily built with standard wired components if there was no Ethernet ...
The M.2 slot is usually used for solid-state storage devices. However, [bitluni] had another fun idea for how to use the interface. He built an M.2 compatible LED matrix that adds a little light to ...