QNAP TL-D400S-US

Overview

The QNAP TL-D400S-US is a 4-bay JBOD storage enclosure designed to expand storage capacity for QNAP NAS devices, Windows workstations, and Ubuntu servers. It supports both 2.5-inch and 3.5-inch SATA drives running at speeds up to 6 Gb/s, making it suitable for demanding data transfer tasks such as video editing, virtual machine backups, and other data-intensive applications. The enclosure connects via high-speed SFF-8088 or SFF-8644 cables to an included QXP PCIe card, ensuring low latency and high bandwidth for efficient data handling.

Key features

• Four drive bays compatible with 2.5-inch and 3.5-inch SATA drives, allowing flexible storage configurations.
• High-speed direct connection through SFF-8088 or SFF-8644 cables paired with a QXP PCIe card to maintain fast data transfer rates.
• Supports RAID 0, 1, and 5 configurations via QTS, QuTS hero, or host operating systems, providing options for performance, redundancy, or raw capacity.
• Lockable drive trays provide physical security to prevent unauthorized access in shared or office environments.
• QNAP JBOD Manager software offers real-time monitoring of disk health and enclosure temperature on Windows and Ubuntu systems.
• Efficient power consumption around 23 watts helps keep operating costs low while running continuously in small studios, production rooms, or home labs.

Key specs

• Drive bays: 4 (supports 2.5-inch and 3.5-inch SATA drives)
• Interface speed: SATA at up to 6 Gb/s per drive
• Host connection: SFF-8088 or SFF-8644 cable with included QXP PCIe card
• RAID support: 0, 1, 5 (via QTS, QuTS hero, or host OS)
• Power consumption: approximately 22.985 watts typical
• Chassis: metal with lockable drive trays

Connectivity and compatibility

This enclosure connects to your host system using a direct cable link through SFF-8088 or SFF-8644 ports, paired with the included QXP PCIe card. This setup ensures minimal latency and maximizes bandwidth, which is essential for transferring large files or running backup operations efficiently. It is compatible with QNAP NAS devices as well as Windows and Ubuntu operating systems, making it a versatile choice for various environments.

Ideal uses and environments

The TL-D400S-US fits well in setups where expanding storage without replacing existing hardware is a priority. It is a strong choice for video editors needing additional scratch disk space, IT administrators managing backup repositories, and enthusiasts building home labs. Its lockable trays and low power consumption also make it suitable for shared office spaces and small production rooms that require reliable, secure, and efficient storage expansion.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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