The IO of is officially 5V, TFT LCD use 3.3V IO. This CTE TFT LCD/SD for provides the connection to a TFT LCD module directly without wires. The use TRUE 5V to 3.3V level translation IC, therefore, it is compatible with many TFT LCD modules. Compatibility is highest when compared to ordinary TFT , which use resistors or buffer to "shift" 5V to 3.3V. Compatibility issues may arise when using this to translate IO level to 3.3V, especially at high write speed The fits two type of TFT LCD module's pinout: (1) 40 pin version LCD which is commonly used in previous version of TFT for 2560 (2) 32 pin version LCD which is commonly used in STM32 development board(unsoldered) For 3.3V is 150mA, the output may not be enough for driving larger screen (e.g. 7inch, 5inch LCD modules). Therefore, this has a onboard 1A 3.3V regulator to supply enough current to the screen. The is suitable for 2560 and the following LCD: 2.2inch TFT LCD module (220x176) 2.8inch TFT LCD module (320x240) 3.2inch TFT LCD module with font IC (320x240) 3.2inch High Resolution TFT LCD Module with font IC (480x320) 3.5inch TFT LCD module with font IC (480x320) (full viewing angle IPS panel) 4.0inch TFT LCD module with font IC (480x320) 4.3inch TFT LCD module with font IC (480x272) 5.0inch TFT LCD module with font IC (800x480) 7.0inch TFT LCD module with font IC (800x480) Colour:grey :PCB Package Contents: 1 x DUE expansion board 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.