Afaik no:
https://imgur.com/a/RjqwA
But they are paired...
It is as much split as paired. It looks like the 'cards' just have the Flash NAND chips on them. The SSD controller is soldered to the motherboard. It would be something new in SSD implementation. Typically the controller and NAND are very tightly coupled.
The SSD controller also contains the key to unlock the encrypted data. So if you just pull NANDs ... almost useless ( no controller so no other machine fits) . if you put the NAND in another machine without the keys ... again almost useless ( may be able to secure erase them).
I don't think going to get 3rd party SSD alternatives because these cards aren't really a full SSD. Frankly, I would suspect the tolerances on the connections and the specific vendor flavor of NAND chips the controller is set to deal with also pragmatically negate it being a viable market.
F*** for so called security.
it is security. Technically, you could decommission an iMac Pro from a company that has sensitive information by pulling the NAND cards ( and destroying them if paranoid about long term breakage of AES-256/512 ). It in the "must destroy" camp then big chunk of mother board needs to be shredded up. This is much cleaner than that.
Similar issue if repair if bigger issue than company can do internally, the data from the SSD can be pulled before ship off to Apple authorized repair shop. ( although I'm sure that would be by arrangement. )
P.S. I suspect this also makes the build to order process a bit easier. Generic logic boards with T2 built and then plug in appropriate NAND cards with CPU , RAM , (and maybe Vega module).
P.P.S. if the NAND chip failure is responsible for 25-60% Apple SSD failures then this is a good move since can simply just dump the NAND chip instead of a complete board replacement.
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...
It's sad that desktop monitors are so scattershot. On a whim I was looking at available monitors that did 4K HDR as I was interested in an XB1X, and there's basically no good consumer options out there.
Scattershot because there are no good standards. This one may clean things up a bit with the "HDR" marketing hype on future generations.
https://www.anandtech.com/show/12144/vesa-announces-displayhdr-spec-and-tiers
5K though isn't a TV size so doubt going to see much in the space be true HDR with full official brightness and color.
Ezio has a 'real' 4K (not TV "4K" ) monitor. That's expensive enough that few can buy.