UniFi Switch 8 150W

Ubiquiti · desktop switch · US-8-150W

what it is

A managed switch in a desktop enclosure: eight gigabit ports, each with PoE (power over the cable), and two SFP fiber transceiver slots. Enclosure 235 × 204 mm, front panel height 40 mm, steel. The vendor describes it as "compact desktop, wall" and states explicitly that it is not rack equipment — even though its height with rubber feet comes out at exactly 43 mm, i.e. the same as one rack unit. There are no rack ears and they cannot be bought separately.

The PoE budget is 130 W, not 150 — the number in the model name describes the power supply, not what remains for connected devices. The ports support PoE+ (802.3af/at) as well as legacy 24 V passive power.

It is cooled without a fan, so it runs silently. This has a price in temperature: in one sample from October 2026, three units showed 63–67°C inside, at zero PoE draw. All three were similar, so this is a property of the model, not of the location.

what we read from it

The state of each of the ten ports separately, and for the eight copper ones also power draw and which standard they supply power in.

• Which power standard is active on the port. This model supplies both PoE+ and legacy 24 V — and a device connected to a wrongly configured port simply does not come up. The reading settles this without taking anything apart.
• PoE draw per port and the total for the device. With a 130 W budget and eight ports, exceeding it really happens, and it shows up as a failure of the most recently connected equipment.
• Link-down counter per port — the same measurement as in rack equipment.
• Which device sits in which port, together with its hardware address.
• Internal temperature — the general_temperature field in the list below.

port layout

The eight copper ports are in a single row, not two — unlike most rack switches. The numbering therefore simply runs from left to right, from 1 to 8. The ports are in two frames of four, but the numbering continues across that gap.

The two SFP transceiver slots are stacked at the right edge: the upper one is port 9, the lower one 10. Their numbers are printed to the left of the cage, not below it as for the copper ports.

On the left side of the panel, the square system LED with the vendor's logo lights up. On the rear panel there is the power jack and a large perforated area — through it the device dissipates heat.

what to watch out for

• A closed cabinet raises a temperature that is already high. With passive cooling, airflow around the enclosure is the only cooling.
• There is no cable test. The UniFi Network 10.6.106 controller has no such function at all.
• SNMP responds, but will not give PoE draw. Per-port draw is exposed only by the controller. An SNMP access password (community) longer than 20 characters is silently truncated by the switch.

what we cannot read

• History of PoE draw over time. The device reports the current value.
• Fan speed — there is no fan.

transceivers tested in this device

Transceivers we checked in this device, and whether the device showed their optical diagnostics (temperature, power, alarm thresholds):

• E2O Communications ES212-LP3TA-A-F1 (1000BASE-LX; Fibre Channel 1/2G LW), firmware 7.5.15.17146: diagnostics not shown (3 units).

All transceivers and switches in one place, with filters: what each device shows.

full parameter list from the controller interface

The list shows WHAT the device exposes — including parameters we do not use ourselves. There are no values here at all: it is a catalog of capabilities, not a reading from anyone's network. It is not a closed list either — explanation below the table.

482 parameters

List source: reading of 7 working units (as of 2026-09-27). The list is the sum of what we observed — more units reveal more parameters, so numbers for different models are not directly comparable.

full list of parameters read via SNMP

This list comes from a different reading path than the controller list above. These are objects the device itself returns over SNMP (names from MIB files). There are no values here, and no port numbers either.

104 parameters

SNMP list source: reading of 3 units (as of 2026-10-18); sample counted separately from the controller list.