Help with SerialCables.com PCI4-AD-x16HE-BG4

[luckylinux]

Would somebody be able to share some more Instructions in how to set these up (if they managed to get anything working) ?

I tried to get a SFF-8644 to SFF-8654 1m Cable from Aliexpress. From my Understanding, unlike "standard" SAS/SATA SFF-8643 to SFF-8654 Cables (which do NOT cross TX/RX), the PCIe SFF-8644 to SFF-8654 Cables and Risers cross TX and RX between the 2 ends, so it should at least have a better change of working.

In Linux however the Card registers with the mpt3sas Driver for some Reason:

[Mon Jul 27 20:48:50 2026] mpt3sas version 54.100.00.00 loaded
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: 63 BIT PCI BUS DMA ADDRESSING SUPPORTED, total mem (65765308 kB)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: CurrentHostPageSize is 0: Setting default host page size to 4k
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: MSI-X vectors supported: 1
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0:  0 1 1
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: High IOPs queues : disabled
[Mon Jul 27 20:48:50 2026] mpt3sas0-msix0: PCI-MSI-X enabled: IRQ 114
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: iomem(0x0000001042000000), mapped(0x00000000cdaf26d4), size(16384)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: ioport(0x0000000000000000), size(0)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: CurrentHostPageSize is 0: Setting default host page size to 4k
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: scatter gather: sge_in_main_msg(1), sge_per_chain(7), sge_per_io(128), chains_per_io(19)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: request pool(0x000000005fa835ba) - dma(0x1234bc000): depth(21), frame_size(128), pool_size(2 kB)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: sense pool(0x00000000c2e17b13) - dma(0x1234b5000): depth(6), element_size(96), pool_size (0 kB)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: reply pool(0x000000009e2ba5c1) - dma(0x123958000): depth(85), frame_size(128), pool_size(10 kB)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: config page(0x000000006837c771) - dma(0x1234b1000): size(512)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: Allocated physical memory: size(29 kB)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: Current Controller Queue Depth(3),Max Controller Queue Depth(16)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: Scatter Gather Elements per IO(128)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: _base_display_fwpkg_version: complete
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: TimeSync Interval in Manuf page-11 is not enabled. Periodic Time-Sync will be disabled
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: "PEX88000"      : FWVersion(00.01.00.00), ChipRevision(0xb0)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: Protocol=(Initiator), Capabilities=(Diag Trace Buffer,Task Set Full,NCQ)
[Mon Jul 27 20:48:50 2026] scsi host10: Fusion MPT SAS Host
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: sending port enable !!
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: hba_port entry: 00000000082e3d16, port: 0 is added to hba_port list
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: host_add: handle(0x0001), sas_addr(0x500605b0000272bf), phys(1)
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: detecting: handle(0x0002),
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: REPORT_LUNS: handle(0x0002),
[Mon Jul 27 20:48:50 2026] mpt3sas_cm0: port enable: SUCCESS
[Mon Jul 27 20:48:51 2026] mpt3sas_cm0: detecting: handle(0x0002),
[Mon Jul 27 20:48:51 2026] mpt3sas_cm0: REPORT_LUNS: handle(0x0002),
[Mon Jul 27 20:48:51 2026] mpt3sas_cm0: handle(0x2) sas_address(0x500605b0000272b1) port_type(0x1)

I installed a small GPU into the Riser.
I tried applying 12V Power to the Riser via a 6-Pin PCIe Connector and watch dmesg / lspci.
Nothing was detected, not even after a Rescan.

I tried PCI-SIG and Serial Cables Modes with the Jumper, but in both Cases it seems to want to register as mpt3sas HBA .