Defective sata port or software error

[karot777]

Okay, hopefully a simple question, I have just become uncertain about something.

I have a desktop pc i use as a media server, but it seems that i can only use 5 of the sata ports, and i read somewhere that if you use your m2 sata port, then you cant use one of the sata ports, is this true? And if i want to use my sata express port for a normal hdd (which is possible by my understanding) do i need some kind of adapter? Because i cant get that to work either.

This is my motherboard:
GIGABYTE GA-B250-HD3P

I have 1 m2 sata for windows and 5 hdd (3,5" & 2,5")
And 1 blue ray drive
And a 750 W PSU

It seems thats its only 1 port that wont see a drive, if i switch the cables, all the drives seems to work fine, expect the one in the sata port i suspect being defective, and the one in the sata express port?

Im im just an idiot? Or is something wrong?

Sorry for any grammatical errors or you know spelling mistakes.

 

[Calvin7]

The SATA Express connector is not compatible with regular SATA devices..

When the M.2 connector is used with an SATA SSD the following items are not available:

SATA3 5
PCIEX4_2

This information is available by reading the motherboard specifications and section 1-7 of the motherboard manual.

 

[karot777]

The SATA Express connector is not compatible with regular SATA devices..

When the M.2 connector is used with an SATA SSD the following items are not available:

SATA3 5
PCIEX4_2

This information is available by reading the motherboard specifications and section 1-7 of the motherboard manual.

Thx for clearing that up for me Calvin

In danger of sounding like a frustation newbie, can I ask you why the SATA3 5 port can't be used when the M.2 is used?
i'm guessing it's som kind of driver issue in the BIOS, but my guessing haven't been very good so far...