Input: AC 100-240V, 50/60Hz Output: DC 5V 4A 20W, DC interface size: 5.5mm x 2.5mm (and compatible with 5.5mm x 2.1mm) It perfect replacement for 2A / 2.2A / 2.5A / 3A / 3.5A as amperage isnt forced. (If your previous Adaptor was less than 4A then this will be a perfect replacement as amperage is NOT Forced). Compatible with Odroid XU4 / XU4Q, WeBoost 850012 , WeBoost connect RV 65, Jetson Nano, Atomic Pi, USB Hub and can replace 5V 4A Power Supply of the barrel size 5.5mmx2.5mm / 5.5mmx2.1mm. ( Please note: It can work for WeBoost 850010 ) Compatible with 5V USB 3.0 Universal Dual Monitor Docking Station, Compatible with 5V 7 Port USB 2.0 Hub Tower with 5V/4A Power Adapter It are certified by CE / FCC certification. We focus on providing quality power products and excellent customer service and Automatic overload cut-off, over voltage cut-off, automatic thermal cut-off, short circuit protection.