Ubiquiti UniFi UNAS 4 Black - UNAS-4-B

At a glance:

The UniFi UNAS 4 is a high-capacity, feature-rich PoE powered network attached storage solution built to scale your data infrastructure without sacrificing simplicity. Encased in a sleek desktop chassis. The UniFi UNAS-4 supports up to four 4 x 2.5” or 3.5” HDDs for bulk storage as well as additional two 2 x M.2 NVMe SSD cache slots.

The UniFi UNAS 4 is PoE+++ powered and requires 80W of PoE power, which can either be provided by a suitable switch or the included 90w PoE+++ injector.

Network connectivity is handled through a 2.5 GbE RJ-45 port, delivering performance well beyond standard gigabit speeds, while a USB-C port offers expansion or external drive attachment options

The UniFi UNAS 4 comes in a compact desktop chassis measuring approximately 246 × 129 × 224.5 mm and weighing about 2.6 kg—it brings a balance of performance and practicality to small offices and technical environments. A colour LCM display on the front grants at-a-glance system information like IP address, usage stats, and diagnostics.Inside, the UNAS 4 is powered by a quad-core ARM® Cortex-A55 processor clocked at 1.7 GHz paired with 4 GB of memory, offering responsive performance even under multi-tasked loads.

On the software side, the UNAS 4 runs UniFi OS and is managed via the UniFi Drive application , Ubiquiti’s license-free storage platform integrated into the broader UniFi ecosystem. Features include:

You’ll find built-in tools for snapshotting, versioning, backups, share management over SMB/NFS, and seamless adoption into your existing UniFi network. The combination of hardware and software delivers a responsive, future-proof solution for expanding storage needs—whether for media production, surveillance archives, or general file serving.