5V/2A Power Supply EU Plug 0.8mm/2.5mm   (Hardkernel G190214002383)

Compatible with ODROID- C1+ /C2 / C0  / X / X2 / U2 / U3 / W(Dock) / C1

• AC 100~240 Volt input
• DC 5Volt / 2A output
• 0.8mm/2.5mm
• Switching mode Adaptor
• EU / US / Japan / Korea compatible
• Part.No. G134111972476

Plug specification : inner diameter 0.8mm and outer diameter 2.5mm
Center is positive and outer is negative 

Certification : https://wiki.odroid.com/accessory/power_supply_battery/power_supplies