ORICO LST-2AS Multi-function Aluminum Alloy Laptop Notebook Heightening Folding Stand Holder 1. Material: aluminum alloy and silicone 2. Scope of application: 11-15.6 inch laptops, tablets, books 3. Freely adjustable height 4. Foldable design, easy to carry 5. Plug and play, easy to use 6. Compatible with Windows, Mac OS, Linux operating systems 7. Hollow design at the bottom, long-lasting work without getting hot 8. Silicone pad on the back plate to prevent the equipment from sliding down 9. Support simultaneous expansion of multiple devices without plugging or unplugging 10. Output interface: USB-A 3.0 x 2andSD card 11. Input interface: USB-A 3.0 x 1 (reserved 5V 2A power supply port) 12. Size: 275x255x50mm Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.