ADHESIVE 3M VHB OPTION: No tools, no clips, push firmly into place, wait a minimum of 2hrs and you're good to go. We only use the strongest version of 3M VHB tape, it will hold our mount and your device securely for years. Use this option for lighter items only, max weight 2lb / 900 grams. DO NOT PLACE ON PAINTED, DAMP OR PLASTERED WALLS, PAINT OR PLASTER MAY COME OFF!. SCREW MOUNT OPTION: Use the included screw mount hardware to firmly fix the hangers under desks and shelves for use with heavier laptops and other delicate, expensive equipment. NON-SLIP FOAM PADS: Foam pads are included to help protect your devices from scratches, and helps to keep them safe and secure at all times. SECURE TRIPLE BRACKET SYSTEM: Place the two side brackets as far apart as needed to accommodate larger and smaller devices. Use the third bracket as a backstop to ensure your devices are completely safe and secure. UNDER DESK LAPTOP HOLDER MOUNT & MORE: Suitable for laptops and almost any device that is less than 47mm /1.8" thick, this includes Laptops, Macbooks, Surface, Cable Boxes, Keyboards, Modems, Wi-Fi Routers, Nintendo Switch, Smart TV Boxes, Streaming Devices, Files, Folders & MORE!.