I'm disappointed to see that "Appendix A: Electrical schematics" has been removed from UM2179 User manual STM32 Nucleo-144 boards (MB1312) Are they available somewhere else?

[CKugl.1]

I'm using the Nucleo-32 on another project and have found the schematics in UM1956 helpful in certain debugging scenarios, as well as a kind of reference design to help me get started on my own board design.

[Tesla DeLorean]

Yes, go to the "CAD Resources" tab on the product pages

https://www.st.com/content/ccc/resource/technical/layouts_and_diagrams/schematic_pack/group1/5f/60/79/49/87/3f/4d/30/MB1312-L4xxZx-A03_Schematic/files/MB1312-L4xxZx-A03_Schematic.pdf/jcr:content/translations/en.MB1312-L4xxZx-A03_Schematic.pdf

[CKugl.1]

Great, thanks!