Can the Intel SR2400SYSD2 2u be upgraded with a more current motherboard. In other words, is there a 2U motherboard that will fit in the SR2400SYSD2 chassis?
According to Intel's documentation:
The Server Chassis SR2400 is mechanically and functionally designed to support the Intel® Server Board SE7520JR2.and Intel Server Board SE7320VP2.
You're on your own for installing anything else.
As @Matt noted, the motherboard form factor is SSI TEB, so you could theoretically install any board with that form factor, though you may run into other problems (like baffles not fitting back into place, etc).