seagate backup plus 2TB hard drive....is gonna work with galaxy s8??????if yes then howand if no then whats the maximum size of hard drive will work....please help me....who knows n using drive with phone

may i use oneplus's dash charge with my galaxy s8?????power output of dash charger is more than the official galaxy s8 fast charger......so it is safe to charge my s8 with dash charger or its not good at all......please help me with that