Depending on the intended usage, you may determine that the default 60 Watt AC adapter may be insufficient to power your device(s). In such cases, it is advisable to use the UMP-AC-130U or another more powerful model. The internal DC/DC converter board in the device has a maximum power handling of 90 Watts for the internal components, including USB bus power, though the AC adapter may exceed this value to accommodate additional USB power or peak loads.
There are two main types of AC adapter for the UMP devices. The first type is the default line of CWT adapters with no extended functionality and a green input power indication LED. The second type are the Konig AC adapters which feature a red input power indicator LED and in some cases a USB connection which allows you to power external harddisks or the UMP-SA-1XX series of signal adapters.
See chapter 1, section 1 for more information on the connection of the AC adapter and the other related components.
Due to the commonly used 12V power interface on the UMP, you can also power it from a car cigarette lighter plug. Although PelNet does not offer any accessories for this task there are 12V adapters that will fulfill this purpose.
Verify that your vehicle provides a 12V power source, or the adapter you are using has a 12V output BEFORE connecting the UMP, as the connection to a higher voltage circuit can cause irreparable damage! Note that some larger automotives provide a 24V power circuit which can be used with a 24V to 12V adapter, though the maximum load of the circuit (Wattage) will drop by approximately 50% due to the conversion.
Note that despite the DC/DC converter board in the UMP which provides a certain tolerance for brief power fluctuations, the voltage on a vehicle’s power circuit often drops as low as 40% of the intended output when starting the engine, which in turn can cause the UMP device to shut down or restart automatically.
It is recommended to contact UMP support before connecting any power sources which are not expressly recommended or listed as compatible.