Ok, I tried moving the SSD back to the slot where I had it before, and tried screwing it without the armor on (like
@Visual Eagle suggested)
However, without the armor on, the screw isn't right and I can't mount the SSD firmly in place. I feel it should be screwed firmly.
I did a bit of reading the mb manual, and I'm a little confused. The slots are not entirely the same.
Look, I'm typing from the motherboard's manual:
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M2_1 - The M.2, also known as the Next Generation Form Factor (NGFF), is a small size and versatile card edge connector that aims to replace mPCIe and mSATA.
The Ultra M.2 Socket (M2_1) supports M Key type 2230/2242/2260/2280 M.2 PCI Express module up to Gen 3 x4 (32 GB/s) (with Summit Ridge, Raven Ridge and Pinnacle Ridge) or Gen 3 x2 (16 GB/s) (with Athlon 2xxGE series APU).
* If M2_1 is occupied, PCIE4 will be disabled.
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M2_2 - The M.2, also known as the Next Generation Form Factor (NGFF), is a small size and versatile card edge connector that aims to replace mPCIe and mSATA.
The M.2 Socket (M2_2) supports M Key type 2230/2242/2260/2280/22110 M.2 SATA3 6.0 GB/s module and M.2 PCI Express module up to Gen3 x2 (16 GB/s).
* M2_2, SATA3_3 and SATA3_4 share lanes. If either one of them is in use, the others will be disabled.
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Can you see the differences?
So one is Ultra the other is not, but the other also supports 22110 while the first doesn't. But the first one supports M.2 PCI Express Module up to Gen 3 x4, while the second one up to Gen 3 x2.
Ok, where should I put the SSD?
@Visual Eagle @underachieved