The Adaptec ACK-I-HDmSAS-HDmSAS-.5M is an internal Mini Serial Attached SCSI HD x4 (SFF-8643) to Mini Serial Attached SCSI HD (SFF-8643) cable. It measures 0.5 meter and is used for connecting a SAS/SATA adapter to a SAS/SATA backplane.
MAIN OVERVIEW FEATURES: Cable Type: Mini-SAS HDCable Length: 1.64 ftConnector on First End: SFF-8643 Mini-SAS HDConnector on Second End: SFF-8643 Mini-SAS HDDevice Supported: BackplaneCompatibility: Microsemi Adaptec Adapters: 7 Series 7Q Series 7H Series 7He Series 8 Series 8Q Series