A hardware interface for SATA drives using two lanes of PCI Express (PCIe) in order to increase the transfer rate over regular SATA. Motherboards came out in 2014, but few drives materialized.

SAS drives require an adapter to hook up to a SATA controller (see SATA and SATA Express). SAS is a point-to-point architecture that uses a controller (host bus adapter) with two full-duplex ...