The Adaptec ACK-I-HDmSAS-HDmSAS-1M is an internal Mini Serial Attached SCSI HD x4 (SFF-8643) to Mini Serial Attached SCSI HD x4 (SFF-8643) cable. It measures 1 meter and is used for connecting a SAS/SATA adapter to a SAS/SATA backplane with mini-SAS HD connectors.
Weight 0.55 Item Dimension 10.6 x 7.2 x 1.2 Warranty Information N/A