This Mini SAS (SFF-8643) to 4x SATA Cable: SFF-8643 is host , connect to the motherboard or RAID Controller with Mini SAS ports. 4x 9Pin SATA is the target , connect to the hard drives with SATA port Before you buy this cable , please make sure the Mini SAS (SFF-8643) on your motherboard or RAID Controller. If the Mini SAS (SFF-8645) on your backplane, this cable will not work with them SFF-8643: the new connector uses less PCB real estate and allows higher port density for internal hosts and devices. Hybrid versions of these new cables will allow for a smooth transition from 6Gb to 14Gb Serial Attached SCSI (SAS) is a high-speed data storage interface designed for high-throughput and fast data access Cable Length: 1.6 Feet / 0.7M CableCreation Focus to the Ideal Design of All of Our Quality Cables CableCreation is not Only a Brand But Also a Creative Team With Own Factory manufacturing Side 1: Mini SAS (SFF-8643) Male with Latch Side 2: 4x SATA Female Port Cable: 30AWG Cable Length:0.5M Cable Color: Black+Blue SFF-8643 Connect to Controller, 4x7Pin Sata Connect to SATA hard drive