This OCuLink cable can be used to connect internal devices, e.g. a backplane with SFF-8643 connector to a controller with OCuLink SFF-8611 connector.
OCuLink SFF-8611 male to SFF-8643 male,Lock to Mating Part: With Active Latch
System requirements:A free OCuLink interface
The Cable can't work for SFF-8643 slimline SAS raid card.
CY Cable OcuLink PCIe PCI-Express SFF-8611 4i to Mini HD SFF-8643 SSD Data Active Cable 50cm