Optional Length: 1m(3.3ft)/2m(6.6ft). Mini SAS HD product complies with SFF-8643 (internal applications) and SFF-8644 (external applications) industry specifications. Available internal and external panel connection types include 1X1 (4X), 1X2 (8x) and 1X4 (16X) configurations, providing choice and designing flexibility for more end customers. The product is mainly used on mini SAS 4X array card as external mini SAS cable. This extension cable supports 3GBps x 4Lane four channels of data transmission, with a transmission rate of 12Gbps