Now I have googled some documents to read, to get a rough idea of the LCD display. References: (1) AliExpress MHS 3.5 inch for raspberry Pi color TFT LCD screen supports retropie games - US$12 https://fr.aliexpress.com/item/32961507290.html (2) MHS3528 User Manual V1.0 http://www.lcdwiki.com/res/MHS3528/MHS-3.5inch_Display_User_Manual_EN.pdf (3) IliTek ILI9486 a-Si TFT LCD Single Chip Driver 320RGBx480 Resolution and 262K-color Specification Preliminary Version: V0.06 2011/05/11 Document No: ILI9486L_DS_V006.pdf https://www.waveshare.com/w/upload/7/78/ILI9486_Datasheet.pdf