QNAP TL-R400S-US

Overview

The QNAP TL-R400S-US is a 4-bay JBOD storage enclosure designed to expand storage capacity for QNAP NAS appliances as well as Windows and Ubuntu systems. It supports four 3.5 inch SATA III 6 Gb/s hard drives, allowing you to add significant storage without replacing existing hardware or interrupting ongoing tasks. With transfer speeds reaching up to 1553 MB/s in RAID 0, it handles demanding workloads such as large backups, media editing, and database testing efficiently.

Key features

• Four SATA III 6 Gb/s drive bays provide straightforward and scalable capacity expansion.
• Supports multiple RAID configurations including RAID 0 for high-speed performance, RAID 5 for data redundancy, and JBOD for flexible individual disk use.
• Includes a QXP PCIe expansion card and Mini SAS SFF-8088 cable for easy and reliable connection to host systems.
• Compact one rack unit chassis with a short depth fits well in space-constrained network closets, cable-dense racks, or portable flight cases.
• Dual 40 mm cooling fans ensure consistent airflow to maintain drive health and prevent overheating during intensive operations.
• Efficient internal 100 W power supply keeps power consumption low, averaging around 25 W during normal use.
• Compatible with QTS and QuTS hero NAS operating systems as well as Windows and Ubuntu platforms, offering versatile integration options.

Key specs

• Drive bays: 4 x 3.5 inch SATA III 6 Gb/s
• Maximum transfer speed: up to 1553 MB/s (RAID 0)
• RAID support: RAID 0, RAID 5, JBOD
• Connection interface: Mini SAS SFF-8088
• Expansion card: QXP PCIe included
• Cooling: dual 40 mm fans
• Power supply: 100 W internal
• Typical power consumption: approximately 25.07 W
• Chassis size: 1 rack unit, short depth for tight spaces

Connectivity and compatibility

The enclosure connects to host systems via a Mini SAS SFF-8088 interface, facilitated by the included QXP PCIe expansion card. This setup ensures a stable and high-speed link to QNAP NAS devices running QTS or QuTS hero, as well as Windows and Ubuntu computers. This broad compatibility makes it a flexible choice for various IT environments.

Performance and reliability

With RAID 0, the TL-R400S-US delivers transfer speeds up to 1553 MB/s, supporting workflows that require fast data access such as video editing or large-scale backups. RAID 5 mode offers data protection by distributing parity information, while JBOD mode allows each drive to operate independently for flexible storage management. The dual cooling fans help maintain optimal operating temperatures, extending drive lifespan and ensuring consistent performance.

Ideal uses and environments

This storage enclosure fits well in small office servers, lab setups, and production studios where additional storage is needed without the complexity of a full secondary NAS. Its compact size and efficient power consumption make it suitable for network closets and portable rack cases, supporting users who require reliable, high-capacity storage expansion in limited spaces.

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.

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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.

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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.

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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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