Supermicro 55cm OCuLink to OCuLink Cable (CBL-SAST-0818) The Supermicro CBL-SAST-0818 enables OCuLink (x4) to OCuLink (x4) connection This cable is compliant with T10 and SFF standard and is verified with Supermicro servers, AOC cards, and storage. Each Supermicro cable is validated to ensure quality and performance.