Western Digital WD Blue 3D NAND SATA, 1TB, M.2 2280, Internal SSD (WDS100T2B0B)

I have Dell 6N9RH Ultra Speed Drive Quad NVMe m.2 PCIe x16 Card and Two Western Digital WD Blue 3D NAND SATA, 1TB, M.2 2280, Internal SSD (WDS100T2B0B) for storage. they don’t show up in Bios on Dell Precision Tower 5810 I have samsung 960 EVO M.2 500GB for boot drive. Western digital dashboard don’t see the two Western Digital WD Blue 3D NAND SATA, 1TB, M.2 2280 when windows 10 professional boot up

The Dell 6N9RH PCIe x16 NVMe adapter can host up to 4 NVMe M.2 solid state drives and is compatible with the T5810. There is no need to change the BIOS settings.

Can you see the SSD’s with the Windows Storage Manager?
Are the SSD’s initialized?

As far as I know, the Dell 6N9RH can’t work with SATA M.2 SSd’s.
To be sure … Try to use a NVMe M.2 SSD.

They don’t show up nowhere on computer system only Samsung 960 evo boot drive is available

Is another adapters you can recommend that will work with WD Blue 3D NAND SATA, 1TB M.2 2280

Startech PEXM2SAT32N1

“This 3-port M.2 SSD adapter card is one of the only cards that supports both PCIe and SATA-based M.2 SSDs (solid-state drives). It’s a versatile way to expand the overall storage capacity of your desktop PC or server. Plus, because it supports a high-speed PCIe M.2 drive, you can increase the speed and performance of your computer.”

IOCrest IO-PCE585-5M PCIe3.0 to 5XM.2(SATA) B-key Card.

I.M.H.O. it’s easier and cheaper to use a 2.5 Inch SATA 3 adapter card for M.2 2280 SATA SSD drives.