Question 2nd m.2 slot not reading my drive

dballs

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Mar 22, 2011
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I built a new PC recently and had a Intel 660p 512GB (M.2 pci-e NVMe 3.0 x4) installed in my Ultra m.2 (PCIe Gen3 x4) slot on my Asrock Steel Legend B450m mobo. It worked great for a couple months but I decided I wanted a larger, better, faster, longer endurance OS/Apps drive as games have gotten crazy large and I filled my 512GB drive with just a handful of games and apps near or past 70% plus I wanted a separate storage drive for files. I bought a 1tb HP EX920 and slapped that one in the Ultra m.2 slot and the 660p in the second M.2_2 (SATA3) slot. I know the second M.2_2 slot is only SATA3 but i figured the drive would just run a little slower but still work. Am I wrong?

It says in my motheboard manual
"• 4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0,
RAID 1 and RAID 10), NCQ, AHCI and Hot Plug*
* M2_2 and SATA3_3 share lanes. If either one of them is in use,
the other one will be disabled.
• 1 x Ultra M.2 Socket (M2_1), supports M Key type
2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32
Gb/s) (with Summit Ridge, Raven Ridge and Pinnacle Ridge)
or Gen3 x2 (16 Gb/s) (with Athlon 2xxGE series APU)**
• 1 x M.2 Socket (M2_2), supports M Key type
2230/2242/2260/2280 M.2 SATA3 6.0 Gb/s module**
** Supports NVMe SSD as boot disks
** Supports ASRock U.2 Kit"

I have no SATA drives plugged in at all.

Build:
CPU: Ryzen 5 2600 (stock speed)
Mobo: Asrock Steel Legend (running BIOS 2.10)
RAM: Corsair Vengence RGB Pro 3000 (running xmp)
GPU: MSI Gaming X RX 580 8GB
OS storage in Utlra m.2 slot: HP EX920 1TB
Other storage in m.2_2 (SATA3): Intel 660p 512GB
PSU: Rosewill Glacier 850 watt 80+ Bronze
axGear Firewire PCI-E Firewire Controller Card IEEE 1394 Adapter in the PCIe1 slot
Windows 10 pro (fully up to date day of post)
All drivers updated day of this post

Thanks in advance!
 

USAFRet

Titan
Moderator
The M.2 port only supports a SATA m.2 drive.

The statement of "** Supports NVMe SSD as boot disks " refers to using an NVMe drive in a PCIe adapter in a PCIe slot on your motherboard.
They mention that specifically, because not all motherboards can boot from a drive in such an adapter.
 
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dballs

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The M.2 port only supports a SATA m.2 drive.

The statement of "** Supports NVMe SSD as boot disks " refers to using an NVMe drive in a PCIe adapter in a PCIe slot on your motherboard.
They mention that specifically, because not all motherboards can boot from a drive in such an adapter.
Thanks for that clarification! man that stinks. And my second PCIe slot is only 2.0 so I guess I will be throttled either way, this one just cost me $12 (for the adapter).
 

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