QNAP TR-004U-US

Overview

The QNAP TR-004U-US is a 4-bay RAID expansion enclosure designed to provide fast and flexible storage expansion through a USB 3.2 Gen 1 Type-C connection. It supports both 3.5-inch and 2.5-inch SATA drives, allowing users to mix high-capacity hard drives with solid-state drives. With read speeds up to 239 MB/s and write speeds up to 225 MB/s in RAID 5, it offers efficient data transfer suitable for video editing, office file sharing, or media library growth.

Key features

• Supports multiple RAID configurations including RAID 0, 1, 5, 10, and JBOD to balance speed, data protection, and storage capacity according to your needs.
• Lockable drive trays secure your drives against accidental removal, ideal for shared workspaces or rack environments.
• Dual 40 mm cooling fans with adjustable speed settings help maintain optimal drive temperatures while minimizing noise.
• USB 3.2 Gen 1 Type-C interface ensures quick and straightforward connection to computers, NAS devices, or servers.
• Compatible with Windows, macOS, and QNAP NAS systems, providing versatile deployment options across different platforms.
• Includes QNAP’s management software for easy RAID setup, drive health monitoring, and status alerts to keep your data safe and accessible.

Key specs

• Drive bays: 4 (supports 3.5-inch and 2.5-inch SATA drives)
• Interface: USB 3.2 Gen 1 Type-C
• RAID modes: 0, 1, 5, 10, JBOD
• Maximum read speed (RAID 5): 239 MB/s
• Maximum write speed (RAID 5): 225 MB/s
• Cooling: Dual 40 mm fans with five speed levels
• Compatibility: Windows, macOS, QNAP NAS

Connectivity and compatibility

The enclosure connects via a USB 3.2 Gen 1 Type-C port, providing a high-speed link to a wide range of devices. It works seamlessly with Windows and macOS computers, as well as QNAP NAS systems, making it a flexible choice for expanding storage or creating backup pools. This compatibility allows you to attach it directly to a workstation for immediate access or integrate it behind a NAS without disturbing existing data.

Performance and reliability

With support for multiple RAID configurations, the TR-004U-US lets you tailor performance and data protection to your workflow. RAID 0 maximizes speed for large file transfers, while RAID 1, 5, and 10 offer varying levels of redundancy to safeguard your data. The enclosure’s cooling system prevents overheating during intensive use, and the lockable trays add a layer of physical security, ensuring your drives stay safe in busy environments.

Ideal uses and environments

This expansion enclosure fits well in environments where additional storage capacity and data protection are critical. Video editors can use it as a fast scratch disk for large project files, small offices can centralize shared documents, and home users can back up growing media collections. Its quiet cooling and secure design also make it suitable for shared workspaces and rack-mounted setups.

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.

Learn more

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.

Learn more