PCIe x4 x8 x16 slots really usable wo problems for RME HDSPe

IPCIE16XD11 is Multiple SFF-8654 x4 to PCIe x16 Slot Expansion with Broadcom MegaRAID 9560-16i, 9560-8i, 9580-8i8e, 9500-16i, 9500-8i,

* The PCIEX4 slot shares bandwidth with the M2P connector The PCIEX4 slot operates at up to x2 mode when a PCIe SSD is installed in the M2P

slot machine vampiro 1 PCIe x16 slot; 4 SATA3, 2 x ; Graphics Output Options: HDMI & Display ; 1 Rear USB Gen2x2 Type-C, 1 Rear USB Gen2 Type-A

slot aristocrat Verilux® NVME Adapter PCIe x16 with Gel Pad, NVME or AHCI SSD to PCIE Adapter Card for Key M 2230, 2242, 2260, 2280 Size SSD, Support PCIe x4 x8