Extension Cord with Multiple Outlets. Extending the length of an existing power cord; Maximm 3 prong extension cords are rated for Indoor and outdoor Extension cord. Use when power extension is needed. The extension cord connects to an existing cable or power strip or a standard 3 prong 120V AC outlet receptacle White 3 outlets power cord. Extend your reach with a 12 ft extension cord such as your pc power cord perfect for cruise essentials or any electrical cord, use it as an outlet extension, this grounded heavy-duty extension cord will give you more than enough power