| Storage drive size | 2.5/3.5" |
| Supported storage drive interfaces | Serial ATA II, Serial ATA III |
| Number of storage drives supported | 4 |
| Hot-swap | Yes |
| USB connectivity | No |
| Product type | HDD/SSD enclosure |
| Product colour | Black, Grey |
| LED indicators | Fan fail, HDD, Link |
| On/off switch | Yes |
| Number of fans | 1 fan(s) |
| Fan diameter | 12 cm |
| Data transfer rate | 6 Gbit/s |
| Noise level | 20.1 dB |
| Power source type | AC |
| AC adapter input voltage | 100 - 240 V |
| AC adapter frequency | 50/60 Hz |
| Operating temperature (T-T) | 0 - 40 °C |
| Storage temperature (T-T) | -20 - 70 °C |
| Operating relative humidity (H-H) | 5 - 95% |
| Width | 160.2 mm |
| Depth | 219 mm |
| Height | 168.5 mm |
| Weight | 3.66 kg |
| Cables included | AC, MiniSAS |
| Screws included | Yes |
| Manual | Yes |
| Host interface | 1 x SFF-8088 |
| Harmonized System (HS) code | 84733080 |
| Description |
| QNAP TL-D400S. Product type: HDD/SSD enclosure. Number of storage drives supported: 4, Storage drive size: 2.5/3.5", Supported storage drive interfaces: Serial ATA II, Serial ATA III. Data transfer rate: 6 Gbit/s. Hot-swap. Product colour: Black, Grey |