ST-506
Sign in to saveright|thumb|Seagate ST506 5¼-inch HDD with cover removed thumb| 2.5" 6495 MB IDE drive next to a 5.25" full-height 111 MB MFM drive
Article
6 sectionsContents
- History
- Interface to controller
- Compatible systems and developments
- Connector pinouts
- Notes
- External links
right|thumb|Seagate ST506 5¼-inch HDD with cover removed thumb| 2.5" 6495 MB IDE drive next to a 5.25" full-height 111 MB MFM drive
The ST-506 and ST-412 (sometimes written ST506 and ST412) were early hard disk drives 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. Introduced in 1980, the ST-506 was the first 5.25 inch HDD. Its successor, the ST-412, was introduced in 1981 and implemented a refinement to the seek speed, and increased the drive capacity from 5 MB to 10 MB, but was otherwise highly similar.