Understanding connectors like SFF-8654 and SFF-8643 can seem confusing , but this cables provide a necessary pathway for rapid data transfer . SFF-8654, often called a SAS connector, generally https://link-lungkay.com/product-center/cablecc-pci-e-ultraport-slimline-sas-slim-4-0-sff-8654-8i-74pin-to-dual-sff-8643-4i-mini-sas/