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Compact white desktop switch with eight RJ45 ports and subtle branding

Ubiquiti Networks

Ubiquiti Networks USW-Ultra (42W) 8-port GbE PoE+ network switch

SKU CH-VXWF-TGZDK MPN USW-Ultra (42W)

Compact Layer 2 switch with seven PoE+ ports, one PoE++ input and 42 W PoE budget

  • FormatDesktop
  • StandardsPassive PoE
  • Network MediaRJ45
  • Network Management TypeManaged
  • Uplink Ports8
  • Uplink InterfaceRJ45

Model Ultra

Show 1 more configurations

Struck-through versions exist but are not stocked here.

  • Compact Layer 2 switch with eight GbE ports for simple network expansion
  • Seven PoE+ output ports power access points or cameras without extra injectors
  • Single PoE++ input port lets the switch draw power from upstream infrastructure
  • 42 W PoE budget available when fed by PoE++ source for multiple devices
  • 16 Gbps switching capacity and 48 Gbps forwarding rate handle heavy traffic loads

Compact Layer 2 PoE Switch

The Ubiquiti Networks USW-Ultra is a managed desktop switch designed for small networks needing powered device connectivity. It provides eight Gigabit RJ45 ports with a total non-blocking throughput of 8 Gbps and a switching capacity of 16 Gbps. Seven ports deliver PoE+ output for devices such as access points or cameras. The unit operates as a Layer 2 managed switch suited for compact deployments.

Versatile Mounting and PoE Input

A desktop format allows placement on a shelf or desk, while the hardware kit supports alternative mounting orientations. One uplink port accepts PoE++ input to power the switch itself, enabling installation without a nearby AC outlet. When fed by PoE++, the switch offers a 42 W PoE budget for connected devices; a PoE+ input reduces the available budget to 16 W. AC power is required for PoE output if the input source is insufficient.

Silent Operation and Power Efficiency

Fanless construction ensures completely silent operation in noise-sensitive environments such as offices or homes. The switch consumes minimal power for its own operation while delivering up to 42 W to attached endpoints. A packet forwarding rate of 48 gigabits per second and 768 KB buffer memory maintain stable throughput under load. Passive cooling eliminates moving parts, reducing long-term maintenance needs.

Highlights

  • Compact Layer 2 switch with eight GbE ports for simple network expansion
  • Seven PoE+ output ports power access points or cameras without extra injectors
  • Single PoE++ input port lets the switch draw power from upstream infrastructure
  • 42 W PoE budget available when fed by PoE++ source for multiple devices
  • 16 Gbps switching capacity and 48 Gbps forwarding rate handle heavy traffic loads

Specifications

BrandUbiquiti Networks
SeriesNetwork Switch
Part NumberUSW-Ultra (42W)
FormatDesktop
StandardsPassive PoE
Network MediaRJ45
Network Management TypeManaged
Uplink Ports8
Uplink InterfaceRJ45
Uplink Speed10/100 Mbps
Uplink Speed/TypeRJ45
Primary Port Count8
Primary Ports8 x RJ45
Primary Port SpeedTotal non-blocking throughput 8 Gbps
Switching capacity 16 Gbps
Primary Port TypeRJ45
Management InterfaceRJ45
Management FeatureHardware Kit
Packet Forwarding Rate48 gigabits_per_second
Buffer Memory768KB
PoE(7) PoE/PoE+ (Pins 1, 2+; 3, 6-)
SNMPNo
Layer2
Layer 2 FeaturesLayer 2 features Port isolation
Storm control
Port mirroring
Multicast / broadcast rate limiting
Flow control
Jumbo frames
Egress rate limit
Layer 3 FeaturesUSW-Ultra
CablingRJ45
LEDsSystem Status
Ethernet PoE Link/activity
Power(1) 54V, 3.9A power adapter (Not included)
(1) 54V, 1.1A power adapter (Not included)
PoE++ (Pins 1, 2+; 3, 6- and 4, 5+; 7, 8-)
Max Power Consumption4.2 amps, 50 volts
Dimensions203 x 76 x 33 mm (8 x 3 x 1.3")
WeightDevice: 320 g (11.3 oz)
Wall mount: 45 g (1.6 oz)
Certificationtrue, unknown
Max Heat Dissipation210 watts
TemperaturePoE++ input: -30 to 60° C (-22 to 140° F)
60W AC adapter input: -20 to 45° C (-4 to 113° F)
210W AC adapter input: -20 to 60° C (-4 to 140° F)
Humidity10 to 90% noncondensing
Features8, RJ45, Hardware Kit, 48 gigabits_per_second, White
Package ContentsHardware Kit
Shipping weight0.45 kg
Package size235 × 95 × 51 mm

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Questions about this item

What speed does the RJ45 uplink interface actually cap at in practice?

The RJ45 uplink ports negotiate at 10 or 100 Mbps, so the physical link is limited to 100 Mbps even though the switch fabric supports 16 Gbps total non-blocking throughput.

What mounting hardware is included and what physical space does the desktop format need?

A hardware kit is supplied for versatile mounting; the desktop form factor fits on a shelf or can be wall-mounted using the included brackets.

How is the switch powered for PoE output and which step is often missed?

Connect a PoE++ source to the single PoE++ input port or use the AC adapter; without one of those, the switch runs but the seven PoE+ output ports stay unpowered.

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