When I purchased the ASUS it ended up being $53 for some reason.
x4x4x4x4 bifurcation works fine in the Jingsha X99.
Maybe a bug in the BIOS. Under the NVME devices menu only the first 4 NVME devices found are displayed. Using the onboard m.2 slot only shows the one in the m.2 slot and only 3 of the 4 samsungs then. However the PCI IIO menu per lane displays all 5 linked up at 4x. Pics showing just the Asus installed with the 4 samsungs.
Need to fire up an OS and see what story that tells now.
all 5 M.2 devices show up in the drive boot menu so that makes me think the nvme device menu only displaying 4 is a limit or a bug.
One other thing I noticed is that using the onboard m.2 slot robs an x4 from the x8 (in x16) slot.
which makes sense ... This motherboard also has qty 2 x1 slots... which I am guessing will also rob from the x8 in x16 slot if you used them. Still enough in the x8 now x4 to run 10Gbe though (I think).
With an m.2 installed you must bifurcate slot 1 to x4x4 in order to get the x8 (phys x16) now x4 to work. windows seems happy as does the MX312A.
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