ERGOTRON Notebook Tray, Supports 1.1~5.4kg, VESA Standard I purchased this about two years ago, but I'm selling it now as I no longer use it. There are minor scratches as shown in image 3, but the condition is good. The following is a copy from Amazon: This is a tray kit for attaching a notebook computer to a monitor arm. It supports notebooks ranging from 1.1kg to 5.4kg and accommodates various sizes of laptops. It comes with a reassuring 5-year warranty. The monitor arm is recommended to be the Ergotron LX Desk Mount Arm, and it supports VESA 75x75mm. Please refer to the website for compatible arm products. Docking stations can also be mounted.