Qnap
Qnap TR-004U-US 4-bay rackmount NAS
A 4-bay rackmount NAS enclosure with hardware RAID and USB 3.1 Gen 1 Type-C for backup and media streaming
- Port USB1 x Type-C USB 3.0 (USB 3.1 Gen 1)
- HDD Interface4 x SATA (4 x Bay)
- Form Factor4-Bay
- ProcessorMicro processor with hardware RAID
- Included HDD CapacityDiskless System
- PowerOpen-frame 100W, Input: 100V-240V ~ / 3.5A, 50 Hz-60 Hz
- Four drive bays expand storage for backup and streaming
- Hardware RAID processor handles RAID levels without host CPU load
- USB 3.1 Gen 1 Type-C port delivers fast direct-attached connectivity
- Diskless design lets you choose any SATA drives
- Compact 1.73-inch height suits space-constrained racks
4-bay hardware RAID enclosure
The QNAP TR-004U-US is a 4-bay rackmount enclosure that uses a micro processor with hardware RAID to manage storage. It ships without drives so you can install your own 2.5-inch or 3.5-inch SATA disks. The unit connects to a host via a single Type-C USB 3.0 port running at USB 3.1 Gen 1 speeds. It is built for backup and media streaming through a personal cloud.
Check host port and drive count
Verify that your computer or server has an available USB Type-C or Type-A port compatible with USB 3.0 before ordering. The enclosure provides four SATA bays and includes twelve screws for 2.5-inch drives plus sixteen screws for 3.5-inch drives. A USB 3.0 Type-C to Type-A cable and a cable clip are supplied in the box. Ensure you have enough SATA drives to fill the desired RAID configuration.
Thermals noise and power draw
An open-frame 100 W power supply accepts 100 V to 240 V input at 50 Hz to 60 Hz. The operating temperature range is 0 °C to 40 °C with humidity tolerance of 5 % to 95 % relative humidity. The 1U form factor measures 1.73 inches high, 17.28 inches wide and 11.46 inches deep, allowing it to fit in standard rack cabinets.
Highlights
- Four drive bays expand storage for backup and streaming
- Hardware RAID processor handles RAID levels without host CPU load
- USB 3.1 Gen 1 Type-C port delivers fast direct-attached connectivity
- Diskless design lets you choose any SATA drives
- Compact 1.73-inch height suits space-constrained racks
Specifications
| Brand | QNAP |
|---|---|
| Model | TR-004U-US |
| Port USB | 1 x Type-C USB 3.0 (USB 3.1 Gen 1) |
| HDD Interface | 4 x SATA (4 x Bay) |
| Form Factor | 4-Bay |
| Processor | Micro processor with hardware RAID |
| Included HDD Capacity | Diskless System |
| Power | Open-frame 100W, Input: 100V-240V ~ / 3.5A, 50 Hz-60 Hz |
| Usage | Backup & stream media through personal cloud |
| Temperature | 0°C - 40 °C |
| Humidity | 5-95% R.H |
| Dimensions | 1.73" x 17.28" x 11.46" |
| Package Contents | TR-004U external RAID enclosure 1 x Power cord USB 3.0 Type-C to Type-A connector cable 2 x Drive tray keys 1 x USB cable clip 12 x Screws (for 2.5-inch drives) 16 x Screws (for 3.5-inch drives) Quick Installation Guide (QIG) |
| Shipping weight | 5.63 kg |
| Package size | 536 × 424 × 180 mm |
Questions about this item
What does the TR-004U-US include and which drives must I supply?
The box contains the 4-bay RAID enclosure, a 100 W power cord, a USB 3.0 Type-C to Type-A cable, two drive-tray keys, a cable clip, twelve 2.5-inch screws and sixteen 3.5-inch screws. Drives are not included; you add up to four SATA HDDs or SSDs.
Should I choose 2.5-inch or 3.5-inch bays for this 4-bay unit?
Each bay accepts either size. Use the twelve supplied screws for 2.5-inch drives or the sixteen supplied screws for 3.5-inch drives; no extra parts are required.
What does the hardware RAID processor do for my backup and streaming workload?
The on-board micro processor handles RAID 0, 1, 5, 10 and JBOD without using host CPU cycles, keeping the USB 3.1 Gen 1 link free for sustained backup and media streaming.
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