OCuLink PCIe SFF-8611 4i to OCuLink SFF-8643 SSD Data Active Cable 50 cm 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 Data transfer rate up to 8 Gbps Cable length: 50cm System requirements: A free OCuLink interface The Cable can't work for SFF-8643 slimline SAS raid card.