Features: Brand new and high quality This product has a 2.1 inch or 2.8 inch screen, which can provide additional display space and help users to view and operate computer information more conveniently. The product supports power supply through USB and has water cooling function, which effectively reduces the temperature of the chassis and ensures the stable operation of the computer. The product is equipped with a magnetic bracket, which can be easily installed on the chassis without additional tools or fixing devices. The secondary screen can not only display computer system information, CPU temperature, fan speed, etc., but also be used as a multimedias player, etc., to improve work and entertainment efficiency. The secondary screen adopts high-definition technology, and the display screen is clear, delicate and full of colors, allowing users to enjoy a better visual experience. Specifications: Material:Metal Type:2.1inch/2.8inch Color:Black/Silver Package Includes: 1 Set USB Secondary Screen 1x Magnetic Stand note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.