AC-DC Switching Regulated Power Supply 20VDC @ 4500mA; 2.1 x 5.5mm (+) center polarity; Part # SW-2045DT2
by PHC Enterprise, Inc.
$62.00
Part #: SW-2045DT2
Input: 100~240VAC
Output: 20VDC @ 4500mA
Plug: 2.1 x 5.5mm 
Desktop