Mobile tower provides instant AC outlet and USB charging access to multiple users in group seating arrangements.Ideal for providing power to laptops, tablets, or smart phones. Power capacity is provided through a single three-prong plug. Users no longer have to search for or share power outlets.The Power Tower includes two AC outlets and two USB outlets on each of four sides, for a total of eight each.Easily mobile on four dual-wheel casters (two locking). Durable powder-coated steel frame includes a cord winder for the 13-1/2 foot power cable.ETL certified to UL 1363.2018 Ed. 5.SCS Indoor Advantage Gold Certified.