Oh thanks, I didn’t know that. I thought it was an all purpose PCIe connector. Is there any way to find out whether it supports SSD storage? Is that way the dmidecode from my other comment (and basically saying that it doesn’t support storage?)

It looks like it is one, but dmidecode doesn’t show it.

# sudo dmidecode --type slot           
# dmidecode 3.4
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.

Handle 0x001C, DMI type 9, 17 bytes
System Slot Information
        Designation: J6B2
        Type: x16 PCI Express
        Current Usage: Available
        Length: Long
        ID: 1
        Characteristics:
                3.3 V is provided
                Opening is shared
                PME signal is supported
        Bus Address: 0000:ff:10.0

Handle 0x001D, DMI type 9, 17 bytes
System Slot Information
        Designation: J6B1
        Type: x1 PCI Express
        Current Usage: Available
        Length: Short
        ID: 2
        Characteristics:
                3.3 V is provided
                Opening is shared
                PME signal is supported
        Bus Address: 0000:ff:1c.4

Handle 0x001E, DMI type 9, 17 bytes
System Slot Information
        Designation: J6D1
        Type: x4 PCI Express
        Current Usage: Available
        Length: Long
        ID: 3
        Characteristics:
                3.3 V is provided
                Opening is shared
                PME signal is supported
        Bus Address: 0000:ff:1d.0

Handle 0x001F, DMI type 9, 17 bytes
System Slot Information
        Designation: J7B1
        Type: x1 PCI Express
        Current Usage: Available
        Length: Short
        ID: 4
        Characteristics:
                3.3 V is provided
                Opening is shared
                PME signal is supported
        Bus Address: 0000:ff:1c.5


Wrong DMI structures length: 3135 bytes announced, structures occupy 3136 bytes.

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