Original airFiber 5X design only supported 24Vdc input. However units with MAC address 04:18:D6:E3:08:E9 or higher support input voltages +19Vdc to +53Vdc.
Since airFiber 2X, 3X and 4X have been released after AF-5X, all AF-2X/3X/4X models support up to +53Vdc. But, since it consumes slightly higher power, it requires higher minimum voltage +23Vdc.
On the other hand, AF-11FX only works with voltages from +32Vdc to +53Vdc, and required power is up to 35 Watts
|Model||Mac ID||Input Voltage||Power Required|
|AF-5X||04:18:D6:E3:08:E9 or lower||+19Vdc to +25Vdc||Up to 15 Watts|
|AF-5X||04:18:D6:E3:08:E9 or higher||+19Vdc to +53Vdc||Up to 15 Watts|
|AF-2X||Any date code||+23Vdc to +53Vdc||Up to 15 Watts|
|AF-3X||Any date code||+23Vdc to +53Vdc||Up to 15 Watts|
|AF-4X||Any date code||+23Vdc to +53Vdc||Up to 15 Watts|
|AF-11FX||Any date code||+32Vdc to +53Vdc||Up to 35 Watts|