DC Barrel Plug Adapter to 7.4 x 5.0 mm from 2.1 x 5.5mm
by PHC Enterprise, Inc.
$3.50
Part #: RC-X741
In: 2.1 x 5.5mm
Out: 7.4 x 5.0mm; center pin is 1mm (also listed as 1.4mm)
Gauge: 18awg
Cable length 3"
Converts DC plug from (socket) 2.1 x 5.5mm to => (plug) 7.4 x 5.0mm
Simple solution to changing your power supply's DC plug size without soldering.