[AURSINC MMDVM Hotspot Board Compatible with P4 settings] since our mmdvm board is defautly setup for Pi-Zero W, Pi 3. and if you do want to connect it with your Pi 4, you could try below methods. PICK ONE. Method 1: Remove the R1 resistance of the hotspot board(single/dual) ; Method 2: Cut off the 2 Raspberry Pi pin headers on the corners of the board ( pick one to operate on your MMDVM board, refer to the product image for the R1 and 2 pin headers locations)
2.2 Inch Color TFT Display Packing List: 1x 2.2 Inch Color TFT Display, 1x USB Adapter Cable; 1x Welding Line