About this item 9-in-1 Outlet Extender LENCENT 2 prong to 3 prong outlet extender equipped with 6 wide-spaced AC outlets and 3 USB ports (5V/3.4A MAX), converts a polarized 2 prong outlet to a 3 prong grounding outlet, allowing you to power 9 devices simultaneously to save more time. Reliable for any indoor place, especially for the bedroom, bathroom and hotel. Ideal for the non-grounded outlets in older house. Grounding Protection This 2 prong outlet adapter with a metal grounding slot helps you plug in up to 6 devices and still gives you the grounding protection. It is easy to line up with the center receptacle hole of most 2 prong outlets because the ground mounting hole is long enough (0.28 in). Just use the screw included to secure it on your outlet to keep the grounding function working. And keep it staying plugged in the wall while unplugged the devices. Wide spaced Outlets & Smart USB Charging The 2 prong power strip 3-sided wide spaced with 6 AC outlets (1.6 inches long space in between) can easily charge up to 6 devices, accommodate 6 bulky plugs at the same time without ing others. High-speed USB ports total 5V/3.4A Max, automatically detect charging devices and deliver optimal charging speed, compatible with smartphone or tablet and most USB devices. 1728J Surge Protector Outlet - Three complementary Surge Protection Circuits, TVS(transient voltage suppressor) MOV(metal oxide varistor) GDT(gas discharge tube), with response speed less than 1Ns, and minimum energy-absorbing capacity of 1728 Joules, much more quickly and reliably than the traditional MOV surge protector circuit. ("SURGE PROTECTED" indicator light on to show your devices are protected) Superior Safety - FCC Certificated and Fire-resistance PC shell. This power strip has overload protection, short-circuit protection, over current protection, over-voltage protection and overheating protection. Combined with fire-resistant (up to 1382°F) casing- keeping you and your devices completely safe. Polarized plug provides a measure of safety for the appliances and house wiring to be aligned in terms of polarity. It is perfect for older houses.