Startech com mobile rack backplane and drive trays for 2 5in sata sas drives startech com satsasbp125 p this one bay mobile rack backplane from startech com lets you install and easily remove a 2 5in sas or sata hdd or sdd in a 3 5in external expansion bay on your desktop pc or server it s ideal for system integrators and administrators looking for flexible management of data storage p p the backplane provides an easy convenient way to install and swap drives between desktop pcs or serv