GeeekPi Router Board for Raspberry Pi CM5/Raspberry Pi CM4, Expansion Board Breakout Board Module for Raspberry Pi Compute Module 5 Series and Compute Module 4 Series

First of all let me say this is not a negative review although it may sound like it initially. Initially I installed Pi OS on my Compute Module 4. I could never get the OLED on the board working. Then I installed OpenWRT and the first Geekpi image I downloaded did NOT have a functional WAN port due to RealTek driver support. The OLED only worked if you applied some hacks that are contained in the Wiki. There is another OpenWRT image that has all the drivers and it has a functional WAN port but then the OLED wasn't working and it requires some hacks that are NOT in the Wiki. At the end of the day I have an OpenWRT installation and everything is working but it wasn't a piece of cake getting there. If Geekpi gets the image straightened out, which I'm sure they will it will be much more plug and play. But no one buys a device like this without expecting to hack away at it a bit so I can't say I'm disappointed. If you think you are just going to slap a Compute Module 4 on this and burn an OS on an SD card (or eMMC memory) and get busy, you are wrong.