| Storage drive size | 2.5/3.5" |
| Supported storage drive interfaces | Serial ATA II, Serial ATA III |
| Number of storage drives supported | 4 |
| RAID levels | 0, 1, 5, 10 |
| Hot-swap | Yes |
| USB connectivity | Yes |
| USB version | 3.2 Gen 1 (3.1 Gen 1) |
| USB connector type | USB Type-C |
| USB connector gender | Female |
| USB ports quantity | 1 |
| Product type | HDD/SSD enclosure |
| Product colour | Black, Grey |
| LED indicators | Yes |
| Key lock | Yes |
| Rack mounting | Yes |
| Rack capacity | 1U |
| Number of fans | 2 fan(s) |
| Fan diameter | 4 cm |
| Data transfer rate | 6 Gbit/s |
| Supported file systems | exFAT |
| Power source type | AC |
| AC adapter input voltage | 100 - 240 V |
| AC adapter input current | 3.5 A |
| 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 | 439 mm |
| Depth | 291 mm |
| Height | 44 mm |
| Weight | 4.03 kg |
| Package weight | 5.66 kg |
| Number of keys included | 2 pc(s) |
| Cables included | USB Type-A to USB Type-C |
| Screws included | Yes |
| Host interface | 1 x Type-C USB 3.2 Gen 1 |
| Harmonized System (HS) code | 84733080 |
| Description |
| QNAP TR-004U. 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. RAID levels: 0, 1, 5, 10, Hot-swap. Rack mounting, Rack capacity: 1U, Product colour: Black, Grey. USB connector type: USB Type-C |