You can use these adapters on any standard wall outlet.
Brad's Deals Editor Michael,
This Targus Plug-N-Power Charging Station with USB Ports drops from $39.99 to $18.99 to $14.99 when you apply our exclusive coupon code BDTRGSPWR in your cart at iTechDeals.com. Plus, the shipping is free. This is the lowest price we found for one of these outlet adapters by $16. This charging station features 10 watts of total USB power and includes three AC outlets with 540 joules of surge protection and two USB charging ports for simultaneous charging. There is no sales tax (except NJ).