| Product | HDD Maker | Volume | HDD | Interface | F/W | Caution | Discontinued |
|---|---|---|---|---|---|---|---|
| SDR421 | Western Digital | 2TB | WD20PURZ-85GU6Y0 / PURPLE PR1000M WD20PURX-64P6ZY0 64MB 5400RPM | SATA3 | Y0 (80.00A80) | Discontinued | |
| SDR421 | Toshiba | 2TB | MARS-D DT01ACA200 7200RPM 64M Buffer (1TB Flatter) | SATA3 | BB0 | Discontinued | |
| SDR421 | Seagate | 2TB | Seagate Surveillance 2T ST2000VX003 | SATA3 | CV12 | - | |
| SDR421 | Toshiba | 3TB | DT01ACA300 3TB 7200RPM | SATA3 | BB0 | Discontinued | |
| SDR421 | Western Digital | 3TB | WD30PURZ-85GU6Y0 / WD30PURX-64P6ZY0 | SATA3 | Y0 (80.00A80) | Discontinued | |
| SDR421 | Seagate | 3TB | Seagate Surveillance 3T ST3000VX006 | SATA3 | CV12 | Discontinued | |
| SDR421 | Western Digital | 4TB | WD40PURX-64GVNY0 64MB | SATA3 | Y0 (80.00A80) | Discontinued | |
| SDR421 | Western Digital | 4TB | WD40PURZ-85TTDY0 / WD40PURX-64NZ6Y0 5400RPM | SATA3 | Y0 (80.00A80) | Discontinued | |
| SDR421 | Seagate | 3TB | Video 3.5 ST3000VM002 3TB 5900RPM | SATA3 | SC23 & SC25 | Discontinued | |
| SDR421 | Western Digital | 2TB | AV-GP WD20EURS-63(73)SPKY0 5400RPM 64MB | SATA2 | Y0 (80.00A80) | Discontinued |
Please use Edge, Explorer 11, Chrome browser.