Ubiquiti Completes UniFi NAS Lineup With UNAS 4 and UNAS Pro 4 Arriving in Early 2026

Ubiquiti has filled out its UniFi Network Attached Storage lineup with two new models — the desktop UNAS 4 and the rackmount UNAS Pro 4 — completing a four-device family that was announced in phases throughout late 2025 and early 2026. The full range now covers everything from a compact two-bay desktop unit to an eight-bay enterprise rack system, all running the same UniFi Drive software platform with no per-seat licensing fees.

The New Additions: UNAS 4 and UNAS Pro 4

The UNAS 4 ($379) is a compact desktop NAS powered entirely over PoE+++ (90W), eliminating the need for a separate power adapter in most deployments. It supports four 2.5"/3.5" HDD bays and adds two M.2 NVMe SSD slots for read/write caching, a combination that can meaningfully accelerate collaborative file access over its 2.5 GbE port. A USB-C port is included for direct local connections. Available in black or white, the UNAS 4 builds on the foundation of the already-released two-bay UNAS 2 ($199, PoE++ 60W) and doubles its storage capacity.

The UNAS Pro 4 ($499) steps up to a 1U rackmount form factor with four hot-swappable 2.5"/3.5" drive bays and the same dual M.2 NVMe caching slots. Where the desktop models top out at 2.5 GbE, the Pro 4 ships with two 10G SFP+ ports alongside a dedicated 1 GbE RJ45 management interface. The dual SFP+ ports support MC-LAG (Multi-Chassis Link Aggregation Group), providing both higher throughput and network redundancy — a key feature for small offices or media production environments that cannot afford unplanned downtime. An early hands-on review published by NAS Compares on February 18, 2026 confirmed the hardware delivers on its specifications.

Full Lineup at a Glance

With the UNAS 4 and Pro 4 now available, the complete UniFi storage family consists of:

• UNAS 2 ($199) — 2-bay desktop, PoE++ (60W), 2.5 GbE, quad-core ARM Cortex-A55 1.7 GHz, 4 GB RAM
• UNAS 4 ($379) — 4-bay desktop, PoE+++ (90W), 2x M.2 NVMe cache, 2.5 GbE + USB-C, 4 GB RAM
• UNAS Pro 4 ($499) — 4-bay 1U rackmount, 2x 10G SFP+ + 1 GbE, MC-LAG, hot-swap, 2x M.2 NVMe cache, 8 GB RAM
• UNAS Pro 8 ($799) — 8-bay 2U rackmount, 2x 10G SFP+, dual 550W hot-swap PSUs, 16 GB RAM

All four models ship with four quad-core ARM processors (Cortex-A55 for the consumer tier, Cortex-A57 at 2.0 GHz for the Pro models) and run UniFi Drive, Ubiquiti\'s license-free NAS software platform.

UniFi Drive: No Licensing, Cloud Backup, and AD Integration

All UNAS devices run UniFi Drive, which Ubiquiti positions as a perpetually license-free platform — a deliberate contrast to the per-device or per-feature subscription models common among competing NAS vendors. Version 3.0 of the software includes flexible RAID configuration that permits mixing drives of different capacities, cloud backup integrations with AWS S3, Backblaze B2, and Wasabi, and Active Directory support for SMB share permissions. Fan control profiles (Quiet, Balanced, Cooling) are available for noise-sensitive deployments.

The UNAS lineup is managed through the familiar UniFi web interface, and the devices integrate natively with the rest of the UniFi ecosystem — switches, access points, and gateways — making them a natural fit for organizations already standardized on Ubiquiti hardware. With the UNAS 4 and UNAS Pro 4 now shipping, IT teams have a complete storage tier to evaluate within a single management platform.