P10 32x32 PIN D

I have 2 questions if some one can help me out regarding this,
1- i m using p10 16x32 smd rgb, it works fine but i need to use a biger in size so how can i join 2 16x32 panels? Bcoz the difference is pin D.
Secondly i was ordered 32x32 p10 and i recieved but pinout is not Hub75, its Hub 73 howcan i use hub73 with arduino?

I asked local supplier to take a 32x32 p10 with hub75 connection amdlater i found ithas only A,B & C Missing is D
Can i use this with Arduino?

Hi @robertking111,

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