Power Strip Tower JACKYLED Surge Protector Electric Charging Station 3000W 13A 16AWG 10 Outlet Plugs with 4 USB Slot + 6ft Cord Wire Extension Universal Socket for PC Laptops Mobile MAX WATTAGE: Due to different voltages in different areas, this surge protector tower is designed to support 110V-250V. If it is used under 125V, the max power will be 125V x 13A = 1625W; if under 250V, the max power can reach 3000W. This Surge Protector780Joule, 13A with 10 outlets and 4 USB Ports has large compatibility that can charge various appliances and devices at the same time to meet your power demands with safe guarantee. CONVENIENT USB PORTS: The 4 USB ports (Total 5V/2.1A) can charge two cellphones together, or one iPad, MP3, digital camera, tablet etc at fast speed. Max Output current per port is up to 2.1A(Note: USB charging may not work if the total need exceeds 2.1A(long time over-current of 2.1A above can even lead to broken USB Ports), and please search for B0759TZDWZ or B0753LL2R6 if you need more USB current. Their total USB Output: 8A, max up to 2.4A/port). SAFE & RELIABLE: RoHS, CE & FCC Certificates. This electric power strip outlet is lightning-proof, overload protected and surge protected and has a fire-retardant shell. It will automatically cut power to protect connected devices when voltage surge is detected. 4 SPECIAL DESIGNS: Vertical outlet tower design provides enough space for each outlet, saves much space and cleans various cords in your working area comparing to traditional power strips; 6ft long cable wire at the bottom can be extended anticlockwise or retracted clockwise by rotating the tower, which saves space; A durable handle on the top is for your easy carrying; One switch at each layer helps save power and gives an easy control to the power strip surge protector. SATISFACTION GUARANTEE: 100% satisfaction guaranteed. 60 days changing or refunding without reasons. JACKYLED Products are sold and shipped by Jackybrand. If you purchase a product from another seller, please request a refund as it is a counterfeit. JACKYLED is the only Authorized Dealer of Jackybrand products. Turn on the switch; Unplug all USB cables and plug part of them again. Get help from us. Get help from us. Get help from us. The switch controlling USB Ports is not turned on; The total current of the usb device/devices exceeds the rated current output of the usb ports; The usb ports are dead when using(it is rare to happen). The USB plate of the product is detective from manufacture. Other reasons.