Thanks to sttts for his Bracket which allowed me to do this mount !! 

https://github.com/VoronDesign/VoronUsers/tree/master/printer_mods/sttts/Waveshare-5.5-inch-HDMI-AMOLED

Quote

1st of  all the reason of using the HDMI screen OVER the DSI one , because i use the Manta M8P board and  CB1 raspberry pi like from Bigtreetech and this combination not compatible with DSI screens . soo 

Disclaimer 

may you needs to raise the Feets couple of mm , in my situation on trident i have to use 6mm raiser with longer M5 screws , maybe on the V2.4 not needed but i uploaded the raiser just in case .

Bom 

• Screen housing    |  3x m3x6mm -- 3x M3 heast set inserts (voron BOM inserts )
• Bracket      |  3x m3x8mm    -- 3x m3 2020 T-Nut .

BIGTREETECH HDMI5

i use Flexible Angled 90° HDMI / USB-C  

• angled Hdmi cable 1
• angled USB-C

i Hope this help - and happy 3d printing