On the other side, you can see ports for 30-pin LVDS ribbon cable, 6-pin backlight control and 4-pin speaker. Installation. The screen comes with seven 2.5*14.4 standoffs, two 2.5*22 ones, seven 2.5*6 ones, and some nuts for installing the Raspberry Pi to the screen. Take the following steps to complete the assembly. Step 1.