cancel
Showing results for 
Search instead for 
Did you mean: 

Is M.2 SSD mode (SATA 3 or PCIE) dictated by the BIOS configuration or by the SSD.

BlueScreen
Level 7
How do I select PCIE mode for M.2 NVME SSD's? My motherboard is the Maximus IX Extreme.

I have SSD's in slot M.2_1 and M.2_2. Both are detected by BIOS as being in SATA mode. If I go into BIOS, Advanced, Onboard Devices and attempt to force PCIE mode operation then they are not detected at all.

Motherboard Documentation does not cover this issue.

So I did a bit of research and need some users on the forum to confirm this.

I have these SSD. Crucial MX300 1TB M.2 (2280) Internal Solid State Drive - CT1050MX300SSD4 . Note the notches on the connection interface, there are 2. https://www.newegg.com/Product/Product.aspx?Item=N82E16820156155

These 2 SSD have only 1 notch on the connection interface.
https://www.newegg.com/Product/Product.aspx?Item=N82E16820147595
https://www.newegg.com/Product/Product.aspx?Item=N82E16820249087
They both explicitly say that they support PCI-Express 3.0 x4.

So question is. Is M.2 NVME SSD mode (SATA 3 or PCIE) dictated by the BIOS configuration or by the NVME SSD used?
10,657 Views
3 REPLIES 3

kaneslair
Level 7
This is a SATA M.2 SSD, NOT an NVMe (PCIe) M.2 SSD. It's controlled by the SSD.

Thanks.

Looks like I spent $500 on M.2 SSD that I didn't want. Live and Learn.

Chino
Level 15