CBP-2131SAS – The new backplane CBP-2131SAS sets the standard with the patented anti-vibration design. Like no other backplane makes it suitable for diverse applications. The chassis is made of high quality aluminum and requires only two 5.25″ and provides space for three 3.5″ or 2.5″ hard drives or SSDs. Supports both SATA I/II/III and SAS I/II.