Power Strip with USB Ports: Power strips with surge protector(2700 Joules), desktop multicontact power strips is made of environmental protection,it will automatically reduce power to protect connected devices when a voltage surge is detected Overload Surge Protection: This power strip has overload protection, short-circuit protection, over-voltage protection and overheating protection 12 Outlets Power Strip with 4 USB Ports: The power strips with 12AC widely outlets and 4 USB charging ports and two independent switches, each USB port features 5V/3.1A Max output, can power up to 12 devices simultaneously. Wide range voltage design, can be used on 110v to 125v circuit Flat Plug Power Strip & Extension Cord Design: The flat plug power strip has 6 feet long extensions cord, two T-shaped holes on the back, easily mount this extension cord flat on the wall. 45° angled flat plug is perfect for tight spaces like bedside tables or behind TVs and will not block the bottom socket