Features: Raise up the height of your computer, lap or the monitor of your PC to maintain a healthy body posture to minimize neck fatigue or spinal problems. Specially processed aluminum alloy material, neat and delicate appearance, sturdy and durable, anti-scratch, can cool down the computer and prevent overheating. USB 3.0 port, for convenient use, you can choose wireless charging style for convenient charging. This multifunctional USB hub wireless charger stand with built-in fast charger and USB hub on the side, more convenient and conpact. The keyboard can be stored underneath to keep your desk simple, clear and organized. Package Includes: Type A: Fast Charging Monitor Holder (Black) Type B: Wireless Charging Monitor Holder (Black) Type C: Wireless Charging Monitor Holder (Silver) Specifications: Name: Lap Base Holder / Stand Material: Aluminum Alloy Style A: with 2 of USB3.0 Ports Style B:wireless charging, with 4 USB ports Size:Overall Dimension: 540X200X90mm/21.26X7.87x3.54in Type A: Fast Charging Monitor Holder (Black) Type B: Wireless Charging Monitor Holder (Black) Type C: Wireless Charging Monitor Holder (Silver) note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.