Ubiquiti UniFi UNAS 2, 2-Bay Diskless Desktop NAS, Black
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Ubiquiti
UNAS-2-B
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Ubiquiti UniFi UNAS 2 - Two-Bay Desktop NAS
2 × 3.5-inch SATA HDD; drives separateRAID 1; single group2.5 GbE, 1G/100M/10M60 W PoE++ adapter included
The Ubiquiti UniFi UNAS 2, exact black variant UNAS-2-B, is a diskless desktop NAS for adding network storage with two 3.5-inch SATA HDD bays. It includes a 60 W PoE++ adapter; drives must be purchased separately.
Best For: For buyers who want a compact desktop NAS with two 3.5-inch HDD bays and RAID 1, and are prepared to supply and configure the drives. A compatible PoE++ power source is required; the included 60 W adapter is one option.
Before you order: This is the black UNAS-2-B, not a drive-equipped system. Buy suitable 3.5-inch SATA HDDs separately and check Ubiquiti’s current qualified-drive list; no maximum capacity is established here. Use the included adapter or an adequately budgeted PoE++ source—ordinary PoE/PoE+ support is not established. RAID 1 mirrors two suitable drives, so usable capacity is constrained by the smaller drive and overhead; RAID is not a backup. Cloud destinations require suitable accounts and configuration, and some remote functions need external network or internet access. The exact regional mains plug and Ethernet cable count are not confirmed.
What's in the Box
- One black diskless Ubiquiti UniFi UNAS 2 appliance, SKU UNAS-2-B, with drive-bay hardware
- One 60 W PoE++ adapter
What It Means in Practice
- Install two suitable 3.5-inch SATA HDDs separately; check the current qualified-drive list before purchase. No maximum drive capacity is established here.
- RAID 1 mirrors the drives for redundancy. Usable capacity is limited by the smaller drive and overhead, and a separate backup is still needed.
- The network port supports 2.5G, 1G, 100M and 10M links. The 5 Gbps USB-C figure is signalling speed, not a guaranteed file-transfer rate.
- For backup, configure a supported destination such as another UNAS, a CIFS/SMB server or a listed cloud service. Cloud storage or subscription is not included.
What Will Not Work
- No HDDs or fixed storage capacity are included; only 3.5-inch HDD support is listed. 2.5-inch, M.2 and NVMe support is not verified.
- RAID 1 is the listed RAID type and the system lists one RAID group; RAID is not an independent backup.
- Use the included 60 W PoE++ adapter or a compatible, adequately budgeted PoE++ source. Ordinary PoE/PoE+ support is not established; mains power is needed with the included injector.
- USB-C is a 5 Gbps expansion port, not an established power input, direct USB-attached computer storage mode or second network interface.
- Bluetooth 4.1 is listed, but Wi-Fi NAS networking and guaranteed Bluetooth file transfer are not established.
- No second LAN, 10 GbE, guaranteed application throughput, Docker/VM/Plex, iSCSI or camera NVR support is established.
- The exact regional mains plug and Ethernet cable count are not confirmed. Cloud service accounts, storage quotas and subscriptions are not included.
Key Features
Two 3.5-inch SATA bays
Choose and install the HDDs separately; no drive capacity is bundled.
RAID 1
Mirrors two suitable drives for redundancy, with usable capacity constrained by the smaller drive and overhead. Keep a separate backup.
2.5 GbE and USB-C expansion
Includes a multi-speed 2.5 GbE port and a USB drive-capable 5 Gbps USB-C expansion port.
Included PoE++ adapter
A 60 W PoE++ adapter is included; maximum device consumption is 60 W and maximum drive power budget is 52 W.
Technical Specifications
Frequently Asked Questions
Singular Expert Insight
The key practical draw is a two-bay diskless NAS that includes its 60 W PoE++ adapter. RAID 1 is listed for a single group, while SMB and NFS provide the documented file protocols.
Buyer’s Guide
✓ Buy it if For buyers who want a compact desktop NAS with two 3.5-inch HDD bays and RAID 1, and are prepared to supply and configure the drives. A compatible PoE++ power source is required; the included 60 W adapter is one option.
✕ Skip it if This is the black UNAS-2-B, not a drive-equipped system. Buy suitable 3.5-inch SATA HDDs separately and check Ubiquiti’s current qualified-drive list; no maximum capacity is established here. Use the included adapter or an adequately budgeted PoE++ source—ordinary PoE/PoE+ support is not established. RAID 1 mirrors two suitable drives, so usable capacity is constrained by the smaller drive and overhead; RAID is not a backup. Cloud destinations require suitable accounts and configuration, and some remote functions need external network or internet access. The exact regional mains plug and Ethernet cable count are not confirmed.
→ Also consider Check suitable 3.5-inch SATA HDDs and a separate backup destination for your intended storage configuration.
Features - Ubiquiti - UNAS-2-B
Form Factor
- 3.5"
Colour
black
Interface
- USB Type-C,
- SATA,
- Ethernet,
- Bluetooth
More Details
Product Code
04:570038
Manufacturer
Ubiquiti