Re: E for effort
I expect that you will be better served once the Pi4 Compute Module reaches general circulation. With the EMMC options and the PCIE port I expect someone will bring out a fairly small all in one box with an M2 or SATA connection inside.
With this and the Pi Keyboard/Mouse it'll be a much better setup.
I really think the Pi400 missed a trick by not making the main board accept a Pi4 Compute Module, it would have opened many more options and they could have sold the main board as a unit for home building personalized Pi's.
Biting the hand that feeds IT
