CM4 Base Board, Compute Module 4 Base Board with 40 Pin GPIO Interface, M.2 M-Key, Standard CM4 Connector, HDMI, USB, RJ45 Gigabit LAN Port, Support Orange Pi CM4 Core Board

Excellent board, work great!

The video output has some red pixels with no apparent cause. Additionally, it will occasionally lock up whereas the pi works correctly on other boards. I am not sure the cause of the issue, but if I determine it's deffinately this device I'll update and remove stars, and if I find out it's the pi, os, or driver issue and I fix it I'll upgrade this rating. Time will tell

The CM4 baseboard added very useful capabilities to the CM4 SBC CPU card. The documentation on both cards was exceptional. However, they lost one star due to a really annoying omission: they did not include the mounting standoff needed if the user wants to add an m.2 card. Due to the tight spacing between the CPU card and this baseboard, finding appropriate hardware is a major pain - I have been unsuccessful so far. For now, I am using a couple of small zipties but it looks awful and has questionable long term reliability. I doubt it would be suitable if the board was used in an application where it was jostled or mobile. They should have incurred the extra $0.10 cost and included the m.2 mounting hardware (2 screws and spacer that fits the tight spacing, or a rubber standoff/grip).

everything orange pi is trash but I keep buying it bc it's cheaper. garbage

This doesn't seem to work with the Pi CM4. It does boot but the USB doesn't work and the CPU operates very slowly.