ASRock X470 Taichi Ulyimate m.2 ssd help needed

sata interfaced m.2 has to go on the first m.2 slot

BRKKAB818 wrote: So, I need to use m.2 slot 1, not m.2 slot 2 and thus my single video card only can run at x8 speed instead of x16 speed.

That is not true. The first M2 slot is directly connected with 4 PCIe Gen3 lanes to the CPU as in every AM4 board. There is no dependency to a PCIe slot.
The second M2 slot is handled different on several AM4 boards.
If you would use the second M2 slot on the CROSSHAIR VII HERO, you would have x8 speed instead of x16 speed for your graphics card.
On the X740 Taichi, the second M2 slot is connected with 4 PCIe Gen2 lanes to the chipset and you would loose the PCIE5 slot (Gen2).

However, your SSD should also work on the second M2 slot of the X740 Taichi (according to the manual).

But, why using such a dump SATA M2 SSD?

he isn't dissing samsung ssd's he is dissing the slower sata based m.2. You should move up to nvm types

either way using both m.2 wont affect the graphics slots it only affects the last pcie slot

If i would own a SATA M2 ssd instead of a NVMe, i would use it too, for sure. ;-)

Does the SATA M2 SSD drive now work in the first slot?

As far as switching the m.3 drive to m.2 slot 1, I haven't messed with it yet and it will be a few days before I do mess with it.
Probab;y not for almost 3 ,ore weeks.
I just had cataract & glaucoma surgery on the only ryr I can see iut of alile ove a week ago.
I won't be able to get new eyeglasses until February 24th at the earliest and my upclose vision is messed up from the stent they put in for the glaucoma and the prescribed eyedrops cause severe migrains and other issues right now.
However, if I don't use them I go blind.
Thus, pc tear aparts are on hold at the moment.
Thr glaucoma isn't the only diabetes issue at the moment, too.
I also have vascular issues affecting both legs that cause severe leg cramps, falls, etc. and require a cane that won't arrive to me until the end of yjr month - mid March, as it has to be a specific high-end 3-prongeed one and have a built in light for seeing with it at night.
Thus, it's high-end anf the only company that has them isn't in the U.S., so I get to wait for it's arrival.
That's after checking evetywhere in L.A. near me and not finding one.