No additional power supply required and no HD required. Just a USB cable. 5-inch multi-theme display,Support horizontal and vertical screen switching, 360 degree rotation. Energy saving and environmental protection, automatic shutdown screen,Comfortable eye protection, stepless adjustment of screen brightness. One-click operation, change the background image, switch themes Compared with monitoring software such as for AIDA64, it takes almost no resources when running,Visual theme editor, drag the mouse to realize your creativity. Display area: 110x66mm Overall size: 122x78mm Resolution: 800x480 Thickness: 10mm Viewing angle: IPS full viewing angle Interface: 1x USB-TYPE C. 1x TF (The product printed words depending on the batch, but this does not affect use) Color: A:Black Material: Aluminum Alloy + LCD Package Contents: 1 x 5-Inch IPS Type-C Secondary Screen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.