Nothing much to see on the sides. These are holes for mounting the rack ears.
Rack ear mounting holes
This is a power connector for your secondary power supply. Secondary power is provided by the USP-RPS 1U module. Priced at around AUD$700 at time of writing. Total output of 950W and capable of powering 6 Unifi devices. As far as I can tell this is not a UPS. This solution makes more sense to me if it is a UPS.
Redundant/Secondary PSU input
Some Cisco networking gear always offers RPS via a similar 24pin ATX like input. I wonder if the two are inter-changeable. This is beyond the scope of the review.
Close up of the 2 SFP+ ports and Gigabit WAN. WAN ports are clearly marked with the blue Internet logo (Ports 9 and 10).
Founder and lead architect of Snakeoil OS - the ultimate audiophile operating system for music playback. My primary focus is in applying technology without losing the human touch.
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This video sums up the flaws of UDM-Pro. It’s really only good for very small businesses, or the home.
https://www.youtube.com/watch?v=SD5Np_jXukg