Gen 10 Plus uses external PSU, Gen 10 (older) does not, and comes with AMD only.

What I don't like about the plus is that it does not come with a NVME slot for the OS. Ideally, I'd like to have two, actually.

But, it does have USB 2x bootable 3.2Gen2, so ironically one could boot from an external NVMe unit and leave the 4 HDD bays for storage only.

Or, one could go with an internal PCIexpress to NVME adapter on the x16 slot.