3 MODE OUTPUT: Features 3 total outputs ? 2 are grounded outputs, one designated for 120V w/ a US standard outlet and 220V only w/ a universal outlet, and 5V standard USB jack. These three outputs can be used simultaneously and continuously UNIVERSAL APPLICATION: This voltage transformer allows you to use your devices and appliances anywhere in the world. The four selectable input voltages 110V/120V/220V/240V lets you use the appropriate voltage depending on the electronic requirement COMPACT SIZE: The step-down regulator's compact size of only 7"L x 7"W x 5"H allows for easy transport. The portable design lets you conveniently bring it when traveling to other countries. Includes heavy-duty power cord and standard US 3-prong plug FUSE/CIRCUIT PROTECTION: The 500-watt voltage supply is equipped w/ fuse and circuit protection for safety and security as well as ensuring the longevity of connected devices/appliances. Comes w/ 2 spare fuses and a universal European power adapte