(Best Buy) Insignia Dual USB Wall Charger: Model: NS-AC2U2N-GBL
Can one use this device to turn on and use their hair dryer when visiting Sydney, Australia (from Texas) ?
I doubt it will work for a hairdryer. I'm not aware of a hairdryer that uses a USB port to power it. This is not an outlet converter, it is a USB outlet that can be plugged into various outlet types when traveling.