Cable Matters 3-Outlet Power Surge Protector with 4 USB Charging Ports and Micro-USB Charging Cables WALL MOUNT SURGE PROTECTOR and phone holder converts any standard single gang wall outlet into a USB charging station for powering, protecting, and re-charging your smartphone or tablet; Innovative slide-out holder cradles your smartphone while charging and slides back when not in use 4-PORT USB CHARGING STATION is equipped with a shared 4.8 amps to charge four USB devices simultaneously; USB charging ports over the AC outlets will not be blocked by large power adapters SAFETY of wall mount tap; Simple and secure installation into any vertical grounded AC outlet with an integrated stabilizing post and included outlet mounting screw EXTREME SURGE PROTECTION combines a 540 joules suppression rating, low clamping voltage, advanced X3 MOV safety shutdown technology, and EMI/RFI noise reduction to protect up to seven connected devices; Diagnostic green PROTECTED LED verifies surge protection status at a glance PHONE CASE COMPATIBLE + BONUS CABLES with smartphones even in a protective case; Universal compatibility with tablets, MP3 players, GPS and other devices with USB charging; Two 9 inch Micro-USB charging cables are included