The ST-506 and ST-412 were early hard disk drive products introduced by Seagate in 1980 and 1981 respectively, that later became construed as hard disk drive interfaces: the ST-506 disk interface and the ST-412 disk interface. Compared to the ST-506 precursor, the ST-412 implemented a refinement to the seek speed, and increased the drive capacity from 5 MB to 10 MB, but was otherwise highly similar.
Seagate ST506 5¼-inch HDD with cover removed
5.25 inch MFM hard disk drive
Western Digital WD1006
Control Connector
Seagate Technology Holdings plc is an American data storage company. It was incorporated in 1978 as Shugart Technology and commenced business in 1979. Since 2010, the company has been incorporated in Dublin, Ireland, with operational headquarters in Fremont, California, United States.
Operational headquarters in Fremont, California
Former Seagate Technology headquarters during the 2010s in Cupertino, California
Former Seagate Technology headquarters prior to 2010 in Scotts Valley, California