Male power plug

Hello!

What is the size(mm) inside and outside of male power plug for routers… Or all routers fit the same size?

EDIT: RouterBoard will fit 2.1 mm male power plug?

Thank you

5.5mm outside and 2mm inside diameter, female, pin positive plug, accepts 8-30V DC

All RouterBoards are the same size?

Thank you

yes

Thank you