Thank you very much for the purchase of a USB charger. Please read the product manual carefully before using, it for later reference. All USB interfaces can be used at the same time, charging current intelligent triage, noninterference, full of electric power automatic does not hurt after machine. System protection is safer, built-in intelligent protection system, and multilevel security, which effectively prevents accidents. Thank you very much for the purchase of a USB charger. Please read the product manual carefully before using, it for later reference. All USB interfaces can be used at the same time, charging current intelligent triage, noninterference, full of electric power automatic does not hurt after machine. System protection is safer, built-in intelligent protection system, and multilevel security, which effectively prevents accidents. Product Specifications: Product model: XL-F999 24 USB Product size:175*75*5mm Packing size:190*130*60mm Input voltage:100-240V AC Input frequency:50 to 60 Hz Input pressure: the I/P-O/P, I/P-FG:1.5KV AC, and O/P-FG:1 min 0.5 VK AC Output voltage:5v Output power: 100w Output ripple:100～150% The voltage regulating a range of plus or minus ±10% Output current:20A Overload protection:90%-105% Temperature:-20°to 50° Work efficiency:70% Cable length:1.2 meters Cooling way: security mute fans two-way cooling aluminum Automatic identification: according to equipment automatically identify current Material: PC ABS fire retardant Color: Black Package Included: 1x 24-Ports USB Charging Station 1x Charging Cable (1.2m) 1x Manual Note: 1. Not waterproof, please stay away from water, liquid and damp. 2. It is prohibited to be close to the fire, and avoid direct sunlight or hot objects. 3. When the charger can be a bit hot, this is normal. 4. Only used between 2000m below the regional security. 5. Applies only to the safe use of tropical climate conditions.