SATA 2 vs SATA 3: Is There Any Practical Difference?

5-Port SATA III 6Gbps PCIe x4 Host Card sata 3 slot 4,1-5,1 have SATA hardwired to the mainboard SATA ports 4,15,1 have SATA wired to slot 4 but likely very sata m2 slot Ideally you want your drives to be plugged into the fastest sata channels available, so if the motherboard has designated sata slots at

sata 3 slot Support SATA III 6Gbps Transfer Speed; Support SATA III SSD, HDD, Optical Drive*; Support PCIe , requires x4 Slot; Standard and Low Profile Bracket