COMPACT & MULTIFUNCTIONAL: Safely charge 3 AC powered devices and 3 USB A powered devices from one low-profile surge protector. Ideal for smartphones, tablets, latops and other devices. This surge protector has a combined (shared) USB output rating of 21W/4.2A and individual USB output rating of 12W/2.4A. Voltage rating 125VAC. Type 3 SPD VPR: (L-N) 500V, (L-G) 600V, (N-G) 600V. Load Rating: 1875W/15 A. CONVENIENT: The built-in, slide out cradles conveniently holds your phone, portable battery packs, and other small devices EASY INSTALLATION: This wall mount surge protector fits perfectly over existing standard outlets. Simply plug in and use. Surge protector comes with a plastic post to steady the product. Included in the box is a center mounting screw, which you can use for a wiggle-free attachment to your wall outlets.