The Ubiquiti UNAS-4-W is a versatile network-attached storage (NAS) device designed to deliver efficient and flexible storage solutions for home offices and small businesses. It features four bays compatible with 2.5″ or 3.5″ HDDs or SSDs, plus two M.2 NVMe SSD cache slots for enhanced speed. With 2.5 GbE networking and a USB-C port, it supports fast data transfers and easy connectivity. The compact polycarbonate case and color LCM display simplify monitoring and management.

Storage Options and Performance

The UNAS-4-W accommodates four drives, supporting both 2.5″ and 3.5″ HDDs or SSDs, allowing you to tailor your storage setup. Two M.2 NVMe SSD slots provide cache support, boosting overall system responsiveness with up to 2 TiB of cache capacity. Powered by a quad-core ARM Cortex-A55 processor at 1.7 GHz and 4 GB of internal memory, it handles multitasking and data management smoothly.

Network and Connectivity

Equipped with a 2.5 GbE RJ45 port, the device ensures stable and fast network connections while remaining compatible with slower speeds (1G/100M/10M). A USB-C port with 5 Gbps speed facilitates quick connections to external devices. The built-in 1.47″ color LCM display shows key status information, making device monitoring straightforward.

Management and Software Features

The UNAS-4-W supports multiple file-sharing protocols like NFS and SMB, enabling easy access across different environments. It offers RAID 5, 6, and 10 configurations along with personal and shared drives. SSD caching improves performance, while features like file encryption, remote backups to other UNAS servers, CIFS/SMB servers, and popular cloud services (Google Drive, OneDrive, Dropbox, Amazon S3, Backblaze B2, Wasabi) help secure and protect your data. Snapshots and shareable links enhance flexibility, and Time Machine backup support caters to Apple users. The web-based interface supports user groups and client applications.

Physical Design and Power Supply

Designed for desktop use, the UNAS-4-W measures 246 x 129 x 224.5 mm and weighs 2.6 kg. Its white polycarbonate case is durable and compact. Power is supplied via the included 90 W PoE+++ adapter, allowing neat installation without extra power bricks. The device’s maximum power consumption is 90 W, with up to 80 W allocated for drives. It operates within a temperature range of -5 to 40 °C and supports relative humidity from 10 to 90% (non-condensing).

Features

• Four bays for 2.5″ or 3.5″ HDD/SSD drives
• Two M.2 NVMe SSD cache slots
• 2.5 GbE RJ45 network port
• USB-C port with 5 Gbps transfer speed
• 1.47″ color LCM display for status monitoring
• Supports RAID 5, RAID 6, and RAID 10 configurations
• File sharing via NFS and SMB protocols
• Backup options for local and cloud services
• File encryption and snapshot support
• Web-based management with user group support
• PoE+++ power supply included

Technical Specifications

• Storage:
  • 4 x 2.5″/3.5″ HDD/SSD bays
  • 2 x M.2 NVMe SSD slots (max 2 TiB cache)
  • Max power consumption for drives: 80 W
• Processor and Memory:
  • Quad-core ARM Cortex-A55 1.7 GHz
  • 4 GB internal memory
• Network and Ports:
  • 1 x 2.5 GbE RJ45 (2.5G/1G/100M/10M)
  • 1 x USB-C 3.2 Gen 1 (5 Gbps)
• Power Supply:
  • 90 W PoE+++ adapter (included)
  • Max power consumption 90 W
  • External power source
• Physical Dimensions and Weight:
  • 246 x 129 x 224.5 mm
  • 2.6 kg
  • White polycarbonate case
• Environmental:
  • Operating temperature: -5 to 40 °C
  • Relative humidity: 10–90 % (non-condensing)
• Display and Indicators:
  • 1.47″ color LCM display
  • LED indicators for status and system information
• Standards and Certifications:
  • CE, FCC, IC certified
  • NDAA compliant

Package Contents

• Ubiquiti UNAS-4-W NAS device
• 90 W PoE+++ power adapter
• Power cable