Popular RepRap 3D Printer LCD Controller and SD Card Reader The intelligent controller includes an SD card reader, rotary encoders and a 20-character x 4 line LCD display You can easily connect it to your RAMPS 1.4 board using "smart adapter" included 3D design print without a computer, just use the G code design stored on the SD card With Smart LCD Controller you can print 3D designs without USB connection to your computer Colour:Red Material:Electronic component Package Contents: 1 x 2004 LCD controller (SD card not included) 1 x connector 2 x 30cm wires Only the above package content, other products are not included. Note: Light 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.