Features: brand new and high quality Dual USB port: 1 USB port. A 4Pin 2.54 pin USB interface on the back of the product. Convenient installation: The configuration software can support horizontal screen, vertical screen, horizontal screen image and vertical screen image display, which is convenient for installation. Stepless adjustment: stepless adjustment of screen brightness, which can be adjusted as required. Compatible system: compatible with Wins system/lcd4linux software package (supporting 32-bit and 64 bit) and Linux. (Applicable to Wins system, Qunhui NAS/openwrt router, raspberry pie and other Linux systems). Easy to use: This 3.5-inch multi theme display is easy to use without additional power supply and multimedia interface. All you need is a USB cable. It supports horizontal and vertical screen switching, 360 degree rotation, and is compatible with multiple systems. Package Includes: 01: 1 x Screen 1 xType-C data cable 1 x Bracket 1 x 4PIN motherboard adapter cable 9-pin 02: 1 x Screen 1 x Type-C cable 1 x Bracket 1 x elbow data line type-c 03: 1 x screen 1 x Type-C cable 1 x Bracket 1 x USB 4 port connector 1 x Type-C charging cradle 1 x elbow data line type-c Specifications: Accessory type: secondary screen Material: Acrylic Color: black Screen size: 3.5 inches Resolution: 320x480 Thickness: 7-8mm Perspective: IPS full viewing angle Interface: dual USB (Micro USB, 4Pin 2.54 pin header USB) Appearance size: 9.1x5.7x0.6cm/3.6x2.3x0.24in Package: 1 , 2 , 3 (optional) note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!