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4-bay desktop SATA JBOD
QNAP TL-D400S 4-Bay Desktop SATA JBOD Expansion Unit
The QNAP TL-D400S is a four-bay tower JBOD with hot-swappable SATA drive bays, one SFF-8088 host interface and multi-lane SATA 6Gb/s connectivity for supported QNAP NAS, Windows and Ubuntu systems.

What is the QNAP TL-D400S?
It is a four-bay direct-attached SATA JBOD enclosure that expands storage for supported QNAP NAS, Windows and Ubuntu systems.
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Direct-attached multi-lane SATA
Each SATA lane connects directly to one installed drive. The supplied description states that one SFF-8088 or SFF-8644 cable carries four SATA 6Gb/s channels for 24Gb/s total bandwidth.
Drive and management support
The four 3.5-inch bays support 3.5-inch SATA hard drives and 2.5-inch SATA solid state drives at 6Gb/s or 3Gb/s. QNAP NAS and computer utilities can monitor and manage JBOD information.
- Lockable drive trays help prevent accidental removal.
- The drive bays are listed as hot-swappable.
- A fan-mode switch provides Auto, high, medium and low settings.
Supplied connection hardware
The product name lists a QXP-400eS-A1164 PCIe SATA host card and one SFF-8088 to SFF-8088 SAS/SATA 6Gb cable.
Important buying and deployment notes
- The enclosure is supplied without HDDs or SSDs.
- On a NAS, it must be used as an individual storage pool or volume and cannot be combined with the connected NAS storage.
- NAS applications cannot be installed on the TL-D400S.
- Only one disk type, HDD or SSD, may be used within a RAID group.
- Non-Server versions of Windows have a 63TB limit for one volume; Windows Server is recommended above 63TB.
Frequently asked questions
Does the QNAP TL-D400S include hard drives?
No. The enclosure is supplied without HDDs or SSDs.
Which drives can be installed?
Its four 3.5-inch bays support 3.5-inch SATA 6Gb/s or 3Gb/s hard drives and 2.5-inch SATA 6Gb/s or 3Gb/s solid state drives.
Which host connection does the TL-D400S use?
It uses one SFF-8088 host interface for its multi-lane SATA connection.
Can TL-D400S storage be combined with the connected NAS storage?
No. It must be used as an individual storage pool or volume.
Can NAS applications be installed on the TL-D400S?
No. The supplied product information states that NAS applications cannot be installed on the enclosure.
Are the drive trays hot-swappable and lockable?
Yes. The supplied description identifies the trays as hot-swappable and lockable.
(TL-D400S)
Features and highlights
Key supplied features for TL-D400S.
Four hot-swappable bays
Four 3.5-inch bays support compatible SATA HDDs and 2.5-inch SATA SSDs.
Multi-lane SATA 6Gb/s
Each drive receives a dedicated SATA lane through the SFF-8088 connection.
24Gb/s stated total
The supplied description states four SATA 6Gb/s channels through one connection cable.
QNAP and computer support
The source lists QTS / QuTS hero, Windows and Ubuntu platform support.
Lockable drive trays
Lockable trays help reduce accidental drive removal.
Included host connection hardware
The product name lists a QXP-400eS-A1164 card and one SFF-8088 cable.
Technical specifications
Specifications are organised from the supplied QNAP product information.
| Model | TL-D400S |
|---|---|
| Product type | 4-bay desktop SATA JBOD expansion unit |
| JBOD connection interface | SATA |
| Drive bays | 4 × 3.5-inch |
| Drives included | No; shipped without HDDs |
| Drive compatibility | 3.5-inch SATA 6Gb/s and 3Gb/s HDDs; 2.5-inch SATA 6Gb/s and 3Gb/s SSDs |
| RAID disk-type limitation | Use only one disk type, HDD or SSD, within a RAID group |
| Hot-swappable | Yes |
| Host interface | 1 × SFF-8088 |
|---|---|
| Supplied connection hardware | QXP-400eS-A1164 PCIe SATA host card and 1 × SFF-8088 to SFF-8088 SAS/SATA 6Gb cable, as stated in the product name |
| LED indicators | HDD 14, status, link and fan error |
| Buttons | Power switch |
| Fan mode switch | Auto, high, medium and low |
| Kensington security slot | Yes |
| System warning | Buzzer |
| Form factor | Tower |
|---|---|
| Dimensions | 168.5 × 160.2 × 219mm, excluding foot pad |
| Foot pad note | May be up to 30mm / 1.18 inches high depending on model |
| Net weight | 3.43kg |
| Gross weight | 4.19kg |
| Power supply | 65W adapter, 100240V |
| Typical operating power consumption | 22.985W, tested fully populated with Seagate ST6000NM0024 HDDs |
| Fan | 1 × 120mm, 12VDC |
| Operating temperature | 040°C |
| Storage temperature | -2070°C |
| Relative humidity | 595% RH non-condensing; wet bulb 27°C |
| QTS / QuTS hero | Yes; QTS 4.4.2 or later or QuTS hero stated |
|---|---|
| Windows | Yes |
| Ubuntu | Yes |
| NAS storage limitation | Independent storage pool or volume only; cannot be combined with connected NAS storage |
| Application installation | NAS applications cannot be installed on the enclosure |
| Windows volume note | Non-Server Windows has a 63TB limit for a single volume |
| Standard warranty source value | 2; unit not stated |
|---|
| SKU | TL-D400S |
| Model # | TL-D400S |
| Barcode # | 885022017928 |
| Brand | QNAP |
| Shipping Weight | 7.3000kg |
QNAP manufacturer warranty
The QNAP TL-D400S is supplied with QNAP manufacturer warranty.
Warranty coverage, eligibility and claim assessment are subject to QNAP's applicable warranty terms. Please retain your DeviceDeal tax invoice as proof of purchase.
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