According to Lenovo, there is a bios update dated 26 may 2020.
https://support.lenovo.com/us/en/downloads/ds036974-bios-update-utility-for-dos-thinkserver-ts140-ts440
Memory sticks were OK in the TS140.
We don’t know if the TS440 has the same bios as the TS140 he tested on.