Seagate

Seagate Desktop HDD 80GB 3.5" SATA II. HDD capacity: 80 GB, HDD speed: 7200 RPM, Storage drive buffer size: 8 MB, HDD size: 3.5", Interface: Serial ATA II

Seagate Desktop HDD 500GB SATA3. HDD capacity: 500 GB, HDD speed: 7200 RPM, Storage drive buffer size: 16 MB, HDD size: 3.5", Interface: Serial ATA III

Seagate Constellation ST1000NM0001. HDD size: 3.5", HDD capacity: 1000 GB, HDD speed: 7200 RPM