Feature:1. Inteligent Protection: Excessive high voltage protection; Excessive current protection; Stable voltage protection;  Overcharge protection; Short circuit protection; Temperature protection.2. Fast Charge: Built-in three technology chips, can identify different mobile phone charging architecture for different mobile phones to match the appropriate current, charging more efficient.3. Multi-Port Support: Supports 20 charging devices at the same time and meet the various demands of charging.4. Inteligent Design: Built-in three technology chips, can identify different charging architecture of different mobile phone, and match the current for different mobile phones..5. Suitable For: Most smart devices used USB ports such as for Xiaomi, for Samsung, for iPhon-e, for iPa-d, etc. Specification:Product name: 20 Ports USB Charging StationProduct size: 142 x 70 x 65mm/5.59 x 2.75 x 2.56inchInput Voltage: AC100-240V 50-60HzOutput power: USB 5V / 18A (90W)Operating temperature: -20° -50°Cable length: approx.120cm/3.94ftCooling method: Safe cooling aluminum + Silent fanAutomatic identification: Automatic identification of current according Single port maximum output: 3.5AMaterial: PC + ABS fire retardantCompatibility: Most smart devices used USB portPlug: EU Plug Package Included:1 x 20 Ports USB Charging Station1 x Power Cable