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 Hi all, just unboxed a Latitude 3520 i5. It came with USB-C DP with Power charger that uses the only Type C port on the unit. I  need to use the Type C port to run 2 external screens. Thus, looking for the AC supply to fit the Barrel port to free up the Type C slot. Can any one help with the correct barrel size/depth and wattage to suit this unit please?  Thanks in advance!
Power supply for Latitude 3520