DC Barrel Jack Adapter 2.5mm to 2.1mm
"Hrmph! All I have is a power supply with a 2.5mm plug and my doodly-whatsit has a 2.1mm jack. The plug is loose 0.4mm, just wont work....what am I going to do!?"
ENTER The Adapter. This 2.5mm to 2.1mm adapter is the best way to adapt a 2.5mm plug so that it will fit into a 2.1mm jack.
Remember that this will fit into a device that normally would require a 5.5 OD / 2.1mm ID plug, and lets you use a 5.5/2.5mm plug.