RB1100-AH2

Hi,
I open an Rb1100Ah2 and I found a little power supply, with a connector.
The PS is of 12Vdc, 2Amp… this motherboard, the RB1100AH2, support 24Vdc direct on this connector?
It has also two fans, so… I can connect direct 24Vdc to this connector?
thanks in advance…

Anybody?
No one has feed this hardware with an external power supply?
Thanks…