Two USB-A ports automatically detect your devices and deliver stable charging speeds of up to 3.4 total amps Four AC grounded outlets provide space to plug in multiple electronic components at the same time 540-joule rating absorbs a high level of energy to protect your electronics from power surges LED indicator light lets you know, at a glance, that the surge protector is on and ready to use Integrated rare earth magnet and a 3M adhesive sticker allow you to instantly mount the Power Shield to virtually any surface Six-foot braided nylon cord is sturdy and reliable while providing flexible placement options