Brand New MPX3V Adapter for Dell Optiplex 390 250W Power Supply Unit PSU

How to Select the correct DELL MPX3V Servers Adapter
Before purchasing DELL MPX3V Servers you need to make sure make the replacement for MPX3V Adapters will give you the correct voltage,suitable current output and the right "tips". Most Servers users travel, for tdose travel to Australia, Europe or US they require Servers adapters that take 100-240 voltage input and output 16 voltage or 19 voltage.
You should Follow 2 easy steps to pick the right Servers adapters.
1. Finding the right "output voltage" and "current output"
To find out the voltage & current, turn your Servers over and look for a label, sticker or writing which shows the voltage and current.You can also find these shown on your original DELL AC Adapter MPX3V if you have it.
voltage [volts V]- it has to be the same as voltage value specified on your Servers.Different Servers were designed to consume power varied by equipments such as CD-Rom, LCD size, CPU maker and CPU speed. You require to use the "matching voltage" . Only use the Replacement For DELL MPX3V Charger output the matching voltage of your Servers. You can easily locate your Servers voltage. Mostly, voltage is printed on your Servers. You also can check your Servers manual.
Current output[ampere A] -it has to be the same or higher than the value specified on your Servers.The Amps may be higher but they cannot by lower. If you are purchasing a universal DELL MPX3V Servers Adapter or Car Charger you will need to work out the Watts of your original DELL MPX3V Servers adapter and select the universal DELL MPX3V Adapter or Car Charger with the same Watts or next highest Wattage. You can work out the Wattage by multiplying the Voltage by the Amps i.e 16V X 4A = 64 Watts. There is no 64 Watt DELL MPX3V AC Adapter so you will need to select the next step up which is the 70 Watt or higher Watt DELL MPX3V Power Adapter.(NOTE: If the wattage requirement for your Servers is lower than the 64W of the adapter, it will not damage your Servers, your Servers will only take the amount of power it requires. I.E. If your Servers needs 50W, then either the 60W or 90W will work OK. If your Servers needs 80W then you will need the 90W one as the 75W one will not be powerful enough.)
2. Finding the right "tips"
Different Serverss have different connectors. You need the right tip for your Servers. This is very simply to find. Basically, laptop AC adapters comprise of 2 ends. One end is male power outlet. You use this end to plug into wall power outlet. The other end is called "TIP" which you will plug this tip into the "DC IN" in your Servers.
Your Servers won't work on the wrong tip. You can only use the " matching Tips"
Warning : DO NOT try to force it in.