Ubiquiti UniFi Mission Critical Switch
The Ubiquiti UniFi Mission Critical features a built-in 368Wh Lithium-ion battery, providing uninterrupted power for up to 8 devices. It includes (4) GbE PoE+, (4) GbE PoE++ ports, and (1) GbE port, as well as (2) 110V AC outputs with a total available PoE of 120W. The internal battery system has a capacity of 368Wh.
Tech Specs
Click here for the Ubiquiti UniFi Mission Critical Switch datasheet.
| Device Specifications | |
|---|---|
| Overview | |
| Dimensions | 442 x 480 x 44 mm (17.4 x 18.9 x 1.7") |
| Port Layout | 1 GbE RJ45 9 (4 PoE+; 4 PoE++) (1G/100M/10M) |
| Max. PoE Output | Up to PoE++ |
| Total PoE Availability | 120W |
| Redundancy | Battery Power Backup |
| Layer 3 | ✓ |
| Form Factor | Rack mount (1U) |
| Performance | |
| Switching Capacity | 18 Gbps |
| Total Non-Blocking Throughput | 9 Gbps |
| Forwarding Rate | 13 Mpps |
| Supported VLANs | 1,000 |
| MAC Address Table Size | 8,000 |
| Packet Buffer Size | 0.5 MB |
| Access Lists | IPv4: 128 MAC: 128 |
| Layer 2 Features | |
| Features | LACP Port Aggregation ✓ STP & RSTP ✓ Advanced IGMP Configuration (Querier, Fast Leave, Router Port) ✓ IGMP Snooping ✓ 802.1X Control ✓ MAC-Based ACLs & Device Isolation ✓ DHCP Snooping & Guarding ✓ Egress Rate Limit ✓ Flow Control ✓ Storm Control ✓ Multicast & Broadcast Rate Limiting ✓ MAC Address Blocking ✓ IP-Based ACLs & Network Isolation ✓ MAC-Based Port Restriction ✓ Port Isolation ✓ Port Mirroring ✓ Jumbo Frames ✓ LLDP-MED ✓ Voice VLAN ✓ Loop Protection ✓ |
| Hardware | |
| PoE Ports | PoE+ 4 PoE++ 4 |
| Max. PoE Wattage per Port by PSE | PoE+ 32W PoE++ 64W |
| Max. Power Consumption | 50W (Excluding PoE Output) 240W (Including PoE Output and AC Output) |
| Power Method | Universal input, 100—240V AC, 50/60 Hz External battery input, 48V DC |
| Power Input Method | AC input DC input (Backup) |
| Power Supply | AC/DC, internal, 240W |
| Supported Voltage Range | 100—240V AC |
| Management | Ethernet, AR |
| Heat Dissipation (Excluding PoE Output) | 170.6 BTU/hr |
| Weight | Without mount: 9 kg (19.9 lb) With mount: 9.2 kg (20.3 lb) |
| Enclosure Material | SGCC steel |
| Mount Material | SGCC steel |
| Supported Rack Depth | 482.6 mm (19") four-post racks Posts depths ranging from 700 to 1,000 mm (27.6–39.4”) |
| LCM Display | 1.3" touchscreen |
| ESD Protection | Air/contact: ± 24kV |
| Ambient Operating Temperature | -5 to 40° C (23 to 104° F) |
| Ambient Operating Humidity | 5 to 95% noncondensing |
| NDAA Compliant | ✓ |
| Certifications | CE, FCC, IC |
| Software | |
| Application Requirements | UniFi Network Version 6.2.26 and later |
FAQs
Q: What is the Ubiquiti USW-Mission-Critical and who should use it?
A: The USW-Mission-Critical is a Layer 2 managed switch with built-in battery and AC failover, offering 4 PoE+ and 4 PoE++ ports for powering devices during outages—an excellent choice for deployments needing uninterrupted PoE-powered hardware.
Q: How much PoE power can the USW-Mission-Critical deliver?
A: It provides up to 120 W total PoE, with each of the 4 PoE++ ports delivering up to 64 W and PoE+ ports providing up to 32 W per port.
Q: How does the internal backup system work in the Mission-Critical switch?
A: It features a 368 Wh lithium-ion battery that supplies PoE during power failures. Additionally, it supports an external 48 V DC battery and maintains pass-through outlets for devices like modems or gateways.
Q: What are the performance specs and Layer features of this switch?
A: With an 18 Gbps switching capacity, 9 Gbps throughput, and 13 Mpps forwarding rate, it supports enterprise-grade networking. Features include VLANs, STP/RSTP, LACP, IGMP snooping, ACLs, DHCP snooping, rate limiting, loop protection, and more.
Q: What design aspects support reliability and operational resilience?
A: Built with an all-steel chassis, fanless for silent operation, it includes a 1.3″ touchscreen for monitoring, ESD protection, and “UniFi AR” switch management capabilities.
Resources
Guide: UniFi Network for Retail and Hospitality — MS Dist
Guide: Setting Up a Ubiquiti UniFi Network for a Small Office or Business — MS Dist