SFF 8643 to SFF 8482 minisas to sas breakout cable, internal mini sas hd connector male connect to sas controller or motherboard, sas 4 sff-8482 connectors with sata power connect to backplane or 4 hdd, each SAS sff-8482 adapter contain sata 7pin data and sata 15pin power connector, NO middle SAS pins, Note: sff-8643 to 4 sff-8482 cable do Not work with SAS Driver, Donot connect sff-8643 on your backplane, otherwise the mini sas hd to sas breakout will not work with them | Mini sas to 4 sas/ sff-8643 to 4 sff-8482, sas 8643 host connect sas hba or pcie controller, mini sas to sas sff-8643 sas forward breakout link between the serial scsi controller and the sata disks, need to attach sata power cables to each sas to sata adapter connector, sas 8643 8482 cable data transfer rate up to 6Gbs per drive | 8643 breakout cable with power, 8643 male sas connector for expand storage use, sas to sas cable are labled, simple up your cable management game, mini sas sff-8643 sff-8482 data transfer cable easy link serial SCSI controller and the SAS/SATA connector | SFF-8643 sas breakout cable build with thin sas cable and tape/braid weaved design, Length choice mini sas to sas with power short/sff 8643 8482 0.5m and long sas breakout cable/8643 4sas 1m, braided sff-8643 to 4 sas cable easy to route after installation, the sff-8643 to sas cable is good choice for DIY and professional installers | What you get: sff8643 to sas (1.6FT/0.5M,1xPCS) sff-8643 internal mini sas hd to 4 sas sff-8482 with sata power adapter cable