120 watt external power supply ensures that up to 2.4 Amps is delivered to each port. This provides optimal charging for each connected device for consistent charge time  regardless of the number and size of devices connected.  With ten universal USB-A ports available  the hub allows simultaneous  multiple device charging  all from a single outlet. Since the power supply unit is external  the small  compact hub fits easily onto a desktop  or can be wall-mounted to save space.  Able to automatically detect each connected device  the hub delivers the precise amount of power up to 2.4A for optimal charging. Included surge protection simultaneously safeguards each device from too much power  and is backed by a 3 000 Connected Equipment Warranty.