Smart 8-Outlet & 4-USB Output Surge Protection Tower Power Strip 4 Universal USB ports auto-adjust charging rate for all of your tablets, smartphones, digital cameras. 100V-250V Surge Protector for Worldwide use. Provide superior protection from power surges, spikes, and damaging voltage fluctuations. Perfect for your home or office, smart design and shape by patent for tight spaces with multiple outlets and flexibility. ETL and FCC Certified?. Easy and safe to use. Use standard plug; Plug and Play. Each charge station block features an individual ON/OFF switch. Premium quality circuitry & Fireproof ABS Plastic, PVC copper cable ensure life-time safety and reliability.