The CYAC40S12G0 converter supports a maximum output power of 40 W (10 V/4 A,SCP high-voltage class B protocol) and is backward compatible with multiple charging specification such as 22.5 W (10 V/2.25 A,SCP high-voltage class B protocol), 20 W (5V/4 A, SCP low-voltage class B protocol), 18 W(9 V/2 A, SCP class A and QC2.0 protocols),and 10 W (5 V/2 A common charging). The converter can be used for fast charging or common charging of most terminal devices.