Cisco SG200-08 (SLM2008T) Gigabit Switch can obtain power from a standard 802.3af PoE source (as PoE-PD on port 1) or from an external AC power supply, but is it possible to connect & use PoE-PD thru Port1 and external power supply at the same time, i.e. simultaneously and permanently without any problems - in fact as a redundant (dual) power solution?
In other words does the SG200-08 switch contains some circuit to allow connect both power options permanently for all the life of the switch without any risk of the switch/external power supply/POE Power Supply Equipment damages (e.g. O'Ring diodes, Active O'Ring controller etc.)? If yes, how is such power condition indicated (different color of system & port LED etc)?
It's very important for us as such switch would be used to connect UPS network management card, i.e. in condition of intermittent power failures.