Given the amount of these that will probably be made (I imagine it will be a low number), I could certainly see having at least two backplanes: 1) network pass

Given the amount of these that will probably be made (I imagine it will be a low number), I could certainly see having at least two backplanes: 1) network passthru cables with power 2) 1G network switch with 1G or 10G uplink I just don't see there being much of a market for these where you'd have to have many more options. But, I think the power option is really a no-brainer... if you have to put passthru RJ45 jacks on the back of it, then that would be fine. At least they'd be in the back and could be pre-wired. I'm tempted to get a CM4 and try to put together something just to see if it would work. I really don't have a problem with much else on the blades as-is (aside from the TPM, I'm not sure what that gets you). I do like the ide of putting an SSD on the blade for storage.