QNAP TR-004U 4-Bay USB 3.2 Gen 1 Raid Expansion Enclosure

The QNAP TR-004U-US is a four bay expansion enclosure that connects through a USB 3.2 Gen 1 Type C port, giving you a fast and uncomplicated way to add more storage to a QNAP NAS, computer, or server.

Each of the four lockable trays accepts either 3.5 inch or 2.5 inch SATA drives, so you can combine high-capacity hard disks with solid-state drives or keep the lineup uniform. Video editors can dedicate the enclosure to large project files, small offices can use it for shared documents, and home users can reserve it for a growing media library or full-system backups.

Flexible RAID modes let you choose the balance that fits your workflow. Select RAID 0 for raw speed, RAID 1 or RAID 5 for data protection, RAID 10 for a blend of performance and redundancy, or JBOD when you simply need every gigabyte available. QNAP’s management software walks you through setup and keeps you informed about drive health and array status.

With read speeds up to 239 MB/s and write speeds up to 225 MB/s in RAID 5, large transfers finish quickly. A 20 GB folder, for example, can move in well under two minutes, making the enclosure a practical scratch disk during active editing or a swift target for nightly backups.

Two 40 mm fans draw heat away from the drives, and a five-level speed control helps you strike the right balance between cooling and noise. The lockable front bays deter accidental removal when the unit sits in a shared workspace or rack.

Compatibility with Windows, macOS, and the full line of QNAP NAS systems means the TR-004U-US adapts to many roles. Attach it directly to a workstation for immediate access, place it behind a NAS to boost capacity without touching existing data, or connect it to a server as a dedicated backup pool.

• Holds four 3.5 inch or 2.5 inch SATA drives
• Offers RAID 0, RAID 1, RAID 5, RAID 10, and JBOD options
• USB 3.2 Gen 1 Type C interface for quick attachment and easy setup
• Delivers up to 239 MB/s read and 225 MB/s write performance in RAID 5
• Lockable drive trays help prevent unwanted removal
• Dual 40 mm cooling fans with five selectable speed levels maintain airflow
• Works with Windows, macOS, and QNAP NAS environments
• Includes QNAP software for RAID creation, drive monitoring, and alerts