One standard port and eight PoE-capable ports
Four PoE+ and four PoE++ connections
Designed for supported four-post 19-inch racks
Managed within the UniFi Network environment
Direct answer for buyers
The Ubiquiti USW-Mission-Critical is a managed UniFi UPS PoE switch built to keep up to eight connected PoE devices supplied from its integrated battery during an AC power interruption. It is mainly used where a small set of essential network endpoints—such as door-access readers, cameras, access points or phones—should remain online without adding separate UPS units and individual PoE injectors. It suits organisations already using or planning a UniFi Network environment and needing a compact 1U continuity solution. Before proceeding, confirm the exact endpoint wattage, expected backup duration, available rack depth, regional AC outlet configuration, network topology and whether the 120 W shared PoE budget is sufficient.
What it does
This appliance performs two closely related functions. First, it operates as a managed Gigabit Ethernet switch with nine copper ports and support for common Layer 2 controls and selected Layer 3 functions. Second, it supplies power to up to eight compatible PoE devices and carries an internal battery intended to maintain that power when the normal AC source is interrupted.
The combination can simplify a compact critical-edge deployment. Instead of specifying a switch, separate PoE injectors and a separate UPS for every small endpoint group, the designer can centralise switching and backup power. The design still requires accurate power calculations, sensible network architecture and a clear understanding of the required runtime.
Who it suits
The model is relevant to branch offices, clinics, retail locations, controlled-entry facilities, small warehouses, education sites and other environments where a limited number of networked devices have a higher continuity priority than ordinary user endpoints.
It is especially logical for buyers already operating UniFi Network because configuration, monitoring and switch management remain within the same platform. It may be less suitable where dozens of ports are required, where multi-gigabit access is essential, where very long battery runtime is expected, or where the wider building needs a fully engineered online UPS and generator strategy.
Business challenges this model can address
Short power interruptions
A brief utility failure can stop a conventional PoE switch and every endpoint connected to it. The integrated battery is intended to keep supported devices operating while mains power is unavailable, subject to total load and battery condition.
Fragmented edge power
Small sites often accumulate injectors, adapters and consumer UPS units. Combining managed switching and backup PoE in one rack appliance can produce a cleaner, easier-to-document equipment layout.
Critical endpoint prioritisation
Not every device needs battery support. This model helps designers identify and place the most important PoE endpoints on a dedicated backed-up switch rather than oversizing protection for the entire access layer.
Unified administration
For UniFi environments, the switch can be adopted and administered through UniFi Network, helping the operations team keep port configuration, VLAN assignment and device visibility within one management approach.
Core capabilities at a glance
Integrated 368 Wh lithium-ion battery for supported PoE loads.
Four PoE+ ports and four PoE++ ports, subject to the shared budget.
VLANs, LACP, spanning tree, IGMP controls, 802.1X and port policies.
1U steel chassis for compatible four-post 19-inch racks.
Product-fit matrix
| Requirement | Suitable when | Confirm before ordering |
|---|---|---|
| Power continuity for PoE endpoints | The essential connected load stays within 120 W. | Per-device wattage, startup demand and target runtime. |
| Compact critical access layer | Eight powered ports and one additional GbE port are adequate. | Current and future port count. |
| UniFi management | The site uses UniFi Network 6.2.26 or later. | Controller hosting, adoption path and administrator access. |
| Rack installation | A compatible four-post rack with sufficient depth is available. | Rack depth, ventilation, weight support and cable route. |
| High-power PoE devices | One or more endpoints require PoE++ while the total load remains controlled. | Exact IEEE PoE class and cable quality. |
Verified technical information
| Brand | Ubiquiti |
|---|---|
| Product name | UniFi UPS PoE Switch Mission Critical |
| Model | USW-Mission-Critical |
| Form factor | 1U rack mount |
| Dimensions | 442 × 480 × 44 mm |
| Weight | 9 kg without mount; 9.2 kg with mount |
| Network ports | 9 × 10/100/1000 Mbps RJ45 |
| PoE ports | 4 × PoE+ and 4 × PoE++ |
| Total PoE availability | 120 W |
| Maximum per-port PSE output | PoE+ 32 W; PoE++ 60 W |
| Battery | Integrated 368 Wh lithium-ion battery |
| Switching capacity | 18 Gbps |
| Non-blocking throughput | 9 Gbps |
| Forwarding rate | 13 Mpps |
| VLAN capacity | Up to 1,000 supported VLANs |
| Power input | 100–240 V AC, 50/60 Hz; 48 V DC external battery input |
| Internal power supply | 240 W AC/DC |
| Maximum consumption | 50 W excluding PoE; 240 W including PoE and AC output |
| Display | 1.3-inch touchscreen |
| Operating temperature | -5 to 40 °C |
| Management requirement | UniFi Network 6.2.26 or later |
| Availability | Contact FourTeck for current UAE regional model, quantity and lead-time guidance. |
Compatibility and dependency notice
The USW-Mission-Critical should be selected as part of a designed system, not as an isolated appliance. Battery runtime is configuration dependent and changes with the number and wattage of attached PoE devices, battery condition, temperature and any supported AC load. A 120 W PoE budget does not mean every high-power port can simultaneously deliver its individual maximum.
Confirm the regional hardware version, power connector, rack geometry, UniFi Network version, Ethernet cabling, PoE standard of every endpoint and the need for an external battery input. Optional external battery arrangements require a properly engineered and manufacturer-compatible solution; do not connect an unverified battery assembly. Any installation involving DC battery systems should be reviewed by appropriately qualified personnel.
Purchase and deployment journey
List essential endpoints
Identify which cameras, readers, controllers, access points or phones genuinely need battery-backed PoE.
Calculate the load
Record normal and peak wattage, PoE class, cable length and required runtime for each device.
Review the rack and network
Check four-post rack depth, airflow, uplink design, VLANs, controller availability and maintenance access.
Confirm regional supply
Validate exact model, electrical version, quantity, warranty terms, lead time and included components.
Install, adopt and test
Mount safely, adopt in UniFi Network, configure ports and perform a controlled power-failure test.
Battery-backed PoE for selected critical devices
The central value of this model is not simply that it contains a battery. Its practical value is that the battery is tied directly to a managed PoE switch, allowing selected network endpoints to remain connected to the same switching fabric while their power source transitions away from normal AC. This is particularly relevant for devices that do not contain their own batteries. A door controller, network camera or wireless access point can lose function immediately when a normal PoE switch shuts down, even when the upstream internet connection or server remains available elsewhere.
A correct design begins by defining which endpoints are truly essential. An access-control deployment may prioritise controllers, readers and an uplink. A small surveillance system may prioritise entrance cameras and the recorder uplink. A branch office may keep one access point and a small group of voice devices active. The switch should not be loaded indiscriminately just because ports are available. Every additional powered device reduces the potential operating time during an outage.
Runtime cannot be promised from battery capacity alone. The attached power demand, conversion losses, internal switch consumption, battery age, ambient temperature and any supported AC output all influence the result. FourTeck can help create a practical load worksheet so the quotation is based on the real endpoint list rather than a general estimate. Where runtime is a strict operational requirement, the design should include test criteria and a review of wider site power resilience.
Managed switching and network control
The USW-Mission-Critical is also a managed switch, not merely a battery unit with Ethernet sockets. It supports common controls used to segment and protect business networks, including VLANs, link aggregation, spanning tree, IGMP functions, 802.1X control, DHCP snooping and guarding, access-control lists, port isolation, rate controls, mirroring, LLDP-MED and voice VLAN features. These tools allow the network administrator to place cameras, access-control systems, wireless equipment and voice devices into appropriate network segments rather than combining all traffic in one flat network.
The presence of these features does not remove the need for design. VLAN membership, trunk settings, gateway routing, firewall policy and controller availability must align with the wider architecture. For example, keeping a camera powered has limited value if its gateway, recorder, wireless bridge or upstream aggregation switch loses power. The continuity chain should therefore be mapped from the endpoint through the USW-Mission-Critical to every service the endpoint requires.
UniFi Network provides the management environment, and the official requirement begins at version 6.2.26. Buyers should verify the currently deployed application version, hosting platform and adoption credentials. A planned change window is advisable when the unit is replacing an existing production switch, particularly where port profiles, VLAN tags or static network settings need to be recreated.
Rack, thermal and serviceability considerations
At 442 × 480 × 44 mm and approximately 9.2 kg with its mount, the appliance is deeper and heavier than many compact access switches because it contains its battery and power system. It is intended for compatible four-post 19-inch racks, with supported post depths stated between 700 and 1,000 mm. A shallow wall cabinet may therefore be unsuitable even when it has a nominal 1U opening.
Before ordering, confirm the rack’s usable depth after allowing for front doors, rear cable bend, power connection and ventilation. The operating environment should remain within the published temperature and humidity limits. Battery-based equipment deserves particular attention in hot or poorly ventilated spaces. A telecom cabinet near a roof, plant room or unconditioned warehouse area can experience higher temperatures than the occupied office space, affecting both reliability and battery life.
Service access matters as well. The unit should be mounted where technicians can inspect connections, view the touchscreen and remove the appliance safely when maintenance is needed. Because of its weight, installation is best planned as a controlled rack activity rather than an improvised shelf placement. The project scope should state who provides the rack, cable management, AC circuit, earthing, labelling and controlled shutdown testing.
Ideal business environments and use cases
Access-control rooms
Power door controllers, readers, intercom endpoints or related network devices while maintaining a managed uplink. The full access-control chain, including locks and backend services, must still be reviewed separately.
Priority surveillance zones
Keep selected entrance, loading-bay or critical-area cameras online through short disruptions. Recorder, storage and upstream connectivity also require suitable protection.
Small branch continuity
Support a compact set of phones, an access point and a gateway uplink where the branch needs limited network operation during local mains instability.
Retail and service counters
Prioritise essential networked devices around access, voice or monitoring. Point-of-sale continuity may require additional non-PoE equipment and a wider UPS plan.
Clinics and controlled spaces
Maintain selected communication or security endpoints during short outages, without representing the switch as medical-grade power protection.
Remote edge cabinets
Consolidate switching and backup power in a supported rack where local intervention is inconvenient. Environmental temperature, remote monitoring and service access remain important.
Integration and operational planning
A resilient edge does not stop at the switch. Map the dependency path for each protected endpoint. A camera may depend on a recorder, DNS, NTP, gateway and storage network. A wireless access point may depend on a cloud gateway, authentication service and internet circuit. A door controller may rely on a management console, credential database and lock power supply. Protecting only one component can preserve power while the service itself remains unavailable.
Network segmentation should be agreed before migration. Port profiles can be prepared for cameras, access systems, voice devices, wireless trunks and management. The uplink should have enough bandwidth and must connect to infrastructure with matching power continuity. When link aggregation is used, both links and the upstream switch must be designed consistently. Spanning-tree and loop-protection settings should be reviewed when the switch enters an existing topology.
Operational procedures should include battery inspection, firmware management, backup of controller configuration, a controlled outage test and documentation of which ports are considered essential. The organisation should define who receives alerts, who can change port profiles and how temporary devices are handled. Connecting an unplanned high-wattage endpoint can alter the expected runtime, so change control is valuable even in a small installation.
Questions to resolve before ordering
Separate essential devices from ordinary network equipment.
Use measured or vendor-rated normal and peak wattage.
Define a realistic minimum runtime and test method.
Check four-post support, ventilation and service clearance.
Confirm controller version, hosting and administrator access.
Review gateways, recorders, lock supplies and upstream switches.
Procurement checklist
☐ Exact model and regional electrical version
☐ Required quantity and deployment locations
☐ Port map for all connected devices
☐ Normal and maximum PoE load per endpoint
☐ Target battery runtime
☐ Rack depth, mounting and weight capacity
☐ Uplink and VLAN design
☐ UniFi Network hosting and version
☐ AC circuit and earthing requirements
☐ Need for supported AC output devices
☐ Installation, configuration and testing scope
☐ Documentation and handover requirements
☐ Warranty terms for the supplied region
☐ Delivery coordination and vendor lead time
How FourTeck can assist
FourTeck can review the intended use of the Ubiquiti USW-Mission-Critical before a quotation is prepared. The discussion can cover endpoint count, PoE class, combined wattage, expected runtime, rack location, controller design, regional model and the wider power-continuity chain. This helps avoid selecting the appliance merely because it includes a battery, without confirming whether it fits the actual operational requirement.
Where requested, the quotation scope can distinguish hardware supply from rack installation, cable patching, UniFi adoption, VLAN and port-profile configuration, controlled outage testing, documentation and support coordination. Compatibility and runtime remain dependent on the final design and connected load. Buyers can also browse FourTeck technology products, review available installation and configuration services, or send the project requirement for a tailored response.
UAE availability and support guidance
Contact FourTeck to confirm current UAE availability for the USW-Mission-Critical, including the exact regional version, quantity, electrical configuration and vendor lead time. Availability can change according to model revision, shipment source and project volume. Delivery and project coordination can be discussed after the requirement is confirmed. Installation and configuration should be included in the quotation where the customer needs rack mounting, UniFi adoption, VLAN setup, port mapping, testing or handover documentation. Warranty conditions should be confirmed for the specific unit and supply route rather than assumed from another regional store.
Dubai, Abu Dhabi, Sharjah and Ajman coverage
FourTeck can coordinate requirement review and quotation support for businesses deploying the Ubiquiti USW-Mission-Critical across Dubai, Abu Dhabi, Sharjah and Ajman. The first step is to share the site type, device list, required quantity, rack details and expected project schedule. Where installation support is needed, the scope should identify access arrangements, working hours, cable readiness, controller credentials and testing responsibilities. Product availability and service scheduling depend on the confirmed requirement, location and current lead time. For a broader view of FourTeck’s business technology capabilities, visit the FourTeck UAE website or review the company profile.
GCC Availability
FourTeck can assist organisations planning Ubiquiti UPS PoE switching requirements across GCC markets, including the United Arab Emirates, Saudi Arabia, Kuwait, Qatar, Bahrain and Oman. Support can begin with a review of the protected devices, PoE demand, required runtime, regional power format, rack environment and UniFi management approach. Based on that information, FourTeck can coordinate model confirmation, quotation, delivery planning and an installation or configuration scope where required. Availability, shipment timing, service visits, warranty handling and vendor lead time can differ by destination, quantity and regional product version. Buyers should therefore provide the destination country, exact model, required quantity, deployment address, preferred schedule and any need for rack mounting, configuration or testing. For projects linked to Kuwait, the FourTeck Kuwait resource may also help start the regional discussion.
Africa Availability
Businesses planning compact, battery-backed PoE deployments in Africa can contact FourTeck for product and project guidance. The review can cover the USW-Mission-Critical model, regional electrical suitability, connected device load, rack conditions, UniFi controller design, accessories, installation needs and support expectations. Fulfilment depends on destination, quantity, vendor lead time, shipment arrangement, local power conditions and the practical scope of the project. Buyers should share the destination country, endpoint list, required quantity, target deployment date and any need for remote or onsite coordination. FourTeck does not treat one regional configuration as automatically suitable for every market, so power and environmental requirements should be checked in advance. Organisations in East Africa can refer to FourTeck Kenya and FourTeck Uganda, while wider enquiries can begin through the FourTeck Africa portal.
Related products and services to consider
UniFi gateway and controller planning
Confirm where UniFi Network is hosted and how the switch reaches management services during an outage.
Rack and power assessment
Check rack depth, ventilation, AC circuit, earthing, cable routing and safe service access before delivery.
PoE endpoint audit
Create an accurate load list for cameras, access points, phones, readers and controllers.
Installation and UniFi configuration
Plan mounting, adoption, port profiles, VLANs, labelling, testing and handover as a defined project scope.
Why businesses contact FourTeck
Buyers contact FourTeck when they need help turning a product name into a workable bill of materials and deployment scope. For the USW-Mission-Critical, that usually means clarifying the required regional unit, checking whether the eight powered ports are enough, calculating the shared PoE budget, reviewing expected runtime, confirming rack fit and identifying dependencies beyond the switch itself. FourTeck can also coordinate quotation details, installation planning, configuration responsibilities, controlled power testing and documentation. The objective is practical requirement clarity rather than an unsupported promise about stock, runtime or delivery.
Frequently asked questions
What is the USW-Mission-Critical mainly used for?
It combines managed Gigabit switching, PoE delivery and an integrated battery so selected PoE devices can remain powered during a mains interruption.
How many PoE devices can it support?
It provides four PoE+ and four PoE++ ports, allowing up to eight powered connections. The combined demand must remain within the 120 W total PoE budget.
How long will the battery last?
Runtime is load dependent. It varies with connected wattage, internal consumption, battery condition, temperature and any supported AC output. A device-level load calculation is required.
Does every port support PoE++?
No. Four ports support PoE++ and four support PoE+. One additional Gigabit RJ45 port is not listed as a PoE output port.
Can it replace a full building UPS?
No. It is a focused switch-and-battery solution for selected endpoints. Building-wide loads, servers, recorders, gateways and long-duration continuity may require a broader UPS and generator design.
Which management software is required?
The official requirement is UniFi Network version 6.2.26 or later. Buyers should check their current controller platform and software before migration.
Will it fit a shallow wall cabinet?
Possibly not. The chassis is 480 mm deep and is intended for supported four-post racks with substantial post depth. Measure the usable cabinet space and cable clearance first.
Can an external battery be connected?
The technical specification lists a 48 V DC external battery input. Any battery solution must be manufacturer-compatible and properly engineered; an unverified battery assembly should not be connected.
Is the product currently available in Dubai?
Availability varies with regional model, quantity and vendor lead time. Contact FourTeck to confirm the current UAE supply position and delivery coordination.
What information is needed for a quotation?
Provide the required quantity, destination, endpoint list, PoE wattage, rack details, controller environment, expected runtime and any installation or configuration requirement.
Confirm the model, load and deployment scope
Share your device list, required quantity, rack location and expected backup objective. FourTeck can review the requirement and prepare a product or project quotation for Dubai and the UAE.
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