




The Ubiquiti UniFi NAS 4 (UNAS-4-W) is a compact desktop network attached storage solution designed for high-performance file storage, sharing, and backup within the UniFi ecosystem. Featuring (4) 2.5"/3.5" drive bays and (2) M.2 NVMe SSD cache slots, it provides faster data access, improved responsiveness, and reliable storage performance for home offices and small businesses.
Equipped with 2.5 GbE networking, USB-C expansion, and powered via PoE+++ with an included adapter, the UNAS 4 offers flexible deployment while maintaining a compact footprint. Integration with UniFi Drive enables advanced data management, backups, and secure file sharing across multiple devices.
| Specification | Details |
|---|---|
| Model | UNAS-4-W |
| Dimensions | 246 x 129 x 224.5 mm (9.7 x 5.1 x 8.8") |
| Form Factor | Desktop |
| Drive Bays | (4) 2.5"/3.5" HDD / SSD |
| NVMe Slots | (2) M.2 NVMe SSD |
| Processor | Quad-Core ARM® Cortex®-A55 @ 1.7 GHz |
| Memory | 4 GB |
| Networking Interface | (1) 2.5 GbE RJ45 |
| Expansion Port | (1) 5 Gbps USB-C |
| Power Method | PoE+++ |
| Power Supply | 90W PoE+++ adapter (included) |
| Max Power Consumption | 90W |
| Max Power Budget for Drives | 80W |
| Display | 1.47" color LCM |
| Weight | 2.6 kg (5.7 lb) |
| Operating Temperature | -5 to 40°C (23 to 104°F) |
| Operating Humidity | 10–90% noncondensing |
The Ubiquiti UniFi NAS 4 combines compact desktop design, high-speed networking, NVMe acceleration, and flexible backup capabilities—making it a powerful storage solution for modern home labs, small businesses, and UniFi-powered environments.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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