Thanks again, Dreamliner. Do you carry all this stuff in your head? Maybe I could fly you to the UK to install it for me? Warmer than Moscow…You can use any switch which supports IEEE802.3af standard (48V, 30W port). HIKVISION DS-3E0105P-E switch is a cheapest one (just $40 for 4+1 ports switch) and the best for the functionalities. Do not save such small money to have a professional switch with 802.3af support.