Ubiquiti U5G – UniFi 5G Backup
Overview
The Ubiquiti U5G is a compact UniFi 5G Backup device that provides automatic cellular internet failover for UniFi networks. It combines 5G RedCap and 4G LTE connectivity with a single Gigabit Ethernet port and PoE power, allowing the device to connect to a UniFi PoE port and provide a cellular backup path when the primary internet connection becomes unavailable. The U5G supports one Nano-SIM and one eSIM and uses two embedded omnidirectional cellular antennas. 5G Standalone connectivity provides peak speeds of up to 220 Mbps downlink and 120 Mbps uplink, while 4G LTE provides up to 195 Mbps downlink and 100 Mbps uplink.
Technical Information
The U5G uses 5G RedCap rather than conventional high-throughput 5G NR. Its supported 5G bands include n2, n5, n7, n12, n13, n14, n25, n26, n30, n38, n41, n48, n66, n71, n77, and n78. LTE support includes B2, B4, B5, B7, B12, B13, B14, B25, B26, B30, B38, B41, B42, B43, B48, B66, and B71. The device has a 1.14-inch status display, factory-reset button, and Ethernet management. It operates from PoE and is designed for placement where cellular signal conditions are suitable rather than requiring installation directly beside the primary UniFi gateway.
Connectivity and Deployment
The U5G provides one Gigabit Ethernet RJ45 port and one PoE input. Ubiquiti describes it as a compact antenna system that plugs into a UniFi PoE port to provide automatic internet backup. It can be installed using the included desktop stand, wall mount, or window mount. The device supports both physical Nano-SIM and eSIM connectivity. Ubiquiti notes that 5G connectivity requires carrier-specific 5G Standalone and RedCap subscription support; otherwise, the device operates using LTE fallback.
Applications
Automatic cellular internet failover for UniFi networks Business continuity for primary WAN outages Retail and point-of-sale network backup Branch offices and small business locations Remote or temporary UniFi deployments Cellular backup where flexible device placement is required UniFi networks requiring 5G RedCap or LTE WAN redundancy
Key Features
5G RedCap and 4G LTE cellular connectivity for automatic internet backup Peak 5G SA speeds up to 220 Mbps downlink and 120 Mbps uplink One Gigabit Ethernet RJ45 port with PoE input Nano-SIM and eSIM support for flexible cellular service deployment Desktop, wall, and window mounting with compact 200 mm form factor
DC Supplies Product Note
The Ubiquiti U5G is a cellular internet backup and connectivity device, not a conventional 5G Wi-Fi access point, Ethernet switch, or standalone cellular router with integrated LAN switching. It is designed to provide cellular WAN backup within a UniFi network and receives power through PoE.
Specifications
| Specification | Details |
|---|
| Brand | Ubiquiti |
| Model | U5G |
| Product Type | UniFi 5G Backup |
| Cellular Technology | 5G RedCap, 4G LTE |
| Networking Interface | 1 x Gigabit Ethernet RJ45 |
| SIM | 1 x Nano-SIM (4FF), 1 x eSIM |
| 5G Peak Speed | 220 Mbps Downlink / 120 Mbps Uplink |
| 4G LTE Peak Speed | 195 Mbps Downlink / 100 Mbps Uplink |
| 5G Max. TX Power | 23 dBm |
| LTE Max. TX Power | HPUE Power Class 2: 26 dBm |
| Antennas | 2 x Embedded omnidirectional cellular antennas |
| Power Method | PoE |
| Display | 1.14-inch status display |
| Dimensions | 200 x 38 x 20.2 mm (7.9 x 1.5 x 0.8 in.) |
| Device Weight | 122 g (4.3 oz) |
| Enclosure Material | Polycarbonate, aluminum alloy |
| Mounting | Desktop stand, wall, window mount |
| Operating Temperature | 0 to 40°C (32 to 104°F) |
| Operating Humidity | 5–95% non-condensing |
| NDAA Compliant | Yes |
| Certifications | FCC, IC, PTCRB, GCF, AT&T, T-Mobile |
| UniFi Network Requirement | Version 10.4.57 and later |
The specifications above are based on Ubiquiti's current U5G technical documentation and cross-checked against current distributor data for the U5G/U5G-US model.
FAQs
What is the Ubiquiti U5G?
The U5G is a UniFi 5G Backup device that provides cellular internet connectivity for automatic WAN failover using 5G RedCap or 4G LTE.
Does the U5G support 5G?
Yes. It supports 5G RedCap with 5G Standalone peak speeds of up to 220 Mbps downlink and 120 Mbps uplink.
Does the U5G support LTE?
Yes. The U5G supports 4G LTE with peak speeds of up to 195 Mbps downlink and 100 Mbps uplink.
What SIM cards does the U5G support?
The U5G supports one physical Nano-SIM and one eSIM.
How is the U5G powered?
The U5G is powered through PoE using its Ethernet connection.
Does the U5G have an Ethernet port?
Yes. It provides one Gigabit Ethernet RJ45 port that also serves as the PoE input.
Can the U5G be wall-mounted?
Yes. Ubiquiti includes mounting options for desktop, wall, and window installation.
What are the dimensions of the U5G?
The U5G device measures 200 x 38 x 20.2 mm and weighs 122 g.
Does 5G always operate on the U5G?
Not necessarily. Ubiquiti states that 5G connectivity requires carrier-specific 5G Standalone and RedCap subscription support. Without that support, the device operates through LTE fallback.
