Length: 1m(3.3ft)/2m(6.6ft). 12G rated cabling supports the latest 12Gb/s SAS interface for hard drives and SSDs. Supports the latest 12Gb/s controller cards such as the LSI 9380-8E and Areca ARC-1883X, and cards from Adaptec and ATTO. Internal (SFF-8643) to External (SFF-8644) cabling connects to the internal port on your controller card, and routes out your case directly to your enclosure.