The device generates moderate heat, comparable to similar PoE switches. It can function in a small power box without active ventilation as long as sufficient passive air exchange is possible. However, ambient temperatures permanently above 40 °C should be avoided.

The Ubiquiti USW-Flex-2.5G-8-PoE switch is supplied without a power supply unit as standard. It can be operated either via PoE+++ (Power over Ethernet) or with a separately available 210 W AC power supply unit. You can find the matching adapter here: https://www.galaxus.ch/de/s1/product/ubiquiti-ac-adapter-210w-netzteil-netzwerk-zubehoer-54373140.