This is an untested adapter to replace a 2.4" TM024HDH71 with an [ER-TFT028A2-4](https://www.buydisplay.com/2-8-inch-240x320-ips-tft-lcd-display-panel-optional-touch-panel-wide-view). The idea is that when you look down on the ER-TFT028A2-4 display, flat, pin 1 of the 50-pin FPC is on the right side. This is inserted first to this board. Then, 30-pin FPC is inserted, so that when flat, the contacts on the other (non-inserted) end are hidden. This FPC is folded downwards as shown on the silkscreen. Finally, the board is folded to the backside of the display, with the no-component-side towards the display. The 50-pin 0.5mm pitch connector is Omron Electronics XF3M-5015-1B ([LCSC C231436](https://lcsc.com/product-detail/FFC-FPC-Connectors_Omron-Electronics-XF3M-5015-1B_C231436.html)), which has contacts on both surfaces. The 30-pin 0.5mm pitch connector is Omron Electronics XF2M-3015-1A ([LCSC C231418](https://lcsc.com/product-detail/FFC-FPC-Connectors_Omron-Electronics-XF2M-3015-1A_C231418.html)), which also has contacts on both surfaces, so you can use 30-pin FPCs with contacts on either the same side, or on opposite sides. This is designed for a 50mm (5cm, approx. 2") 30-pin FPC cable, such as [LCSC C2857735](https://lcsc.com/product-detail/FFC-FPC-Connect-Cables_JUSHUO-JS05B-30P-050-4-8_C2857735.html). The 0603/0805 pad marked Load is for the original backlight (three series LEDs, 8.7V-10.2V at max. 20mA); hopefully it does not need to be populated. One can use a quarter-watt 470 Ohm resistor as a stand-in for the LEDs, if necessary. The pads marked + and - are for the ER-TFT028A2-4 backlight LEDs. They are in parallel, with forward voltage of 3.2V (typical; max. 3.4V) at max. 80mA; something like 60mA to 70mA is recommended.