Planet XT-705A User Manual page 14

2.5mm
Width of DC Receptacle: 2.5mm
+5V for each slot
DC receptacle is 2.5mm wide that matches the central pole;
the width of the Media Converter DC jack also measures
2.5mm.
Warning: Do not install any improper unit.Converter.
The device is a power-required device, meaning it will not work
till it is powered. If your networks should be active all the
time, please consider using UPS (Uninterrupted Power Supply)
for your device. It will prevent you from network data loss or
network downtime.
In some areas, installing a surge suppression device may also
help to protect your Media Converter from being damaged by
unregulated surge or current to the converter or the power
adapter.
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