2004 Intelligent LCD Display Controller Module with Adapter for RAMPS 1.4 Arduino Mega Shield Accessory 3D Printer Controller Kit Uses a 20 character x 4 line LCD display. Features an SD card slot on the back, allowing you to load slicing files onto an SD card and select them directly from the LCD screen for printing. Enables encoder parameter setting and print file selection. Plug and play with RAMPS, but requires firmware modification for support. Description: Smart Graphics Controller, Rotary Encoder, and 20 character x 4 line LCD Display. Easily connects to your RAMPS 1.4 board. No PC connection needed to control your 3D printer once this board is connected to your RAMPS. Print your 3D designs without a PC, using only the G-code file stored on the SD card. All operations can be performed using the smart controller's encoder. Package List: 1 * 2004 LCD Smart Controller 1 * connection cable 1 * adapter Manual measurement, please allow 1-3 cm error. Due to light and screen differences, there will be some color difference, subject to the physical object received.