How do you connect and code a servo controller module (8ch) with Arduino Uno? Answered

Hello Everybody! hope everything is well...

I want to start using a new servo controller module (8ch) which i recently bought, i tried to research how to use them but i could not find anything that went into enough depth or explanation of how to use it. What i'm saying is i don't know how to use or even how to connect this ti me arduino Uno. I would appreciate if you could help me with this or if you left a comment with a video/website link where i am able to find info on how to connect, code  and use this controller. Appreciate your time! (i have attached a photo of the exact product i bought). Here is the Sample code of the product:
#include <SoftwareSerial.h>
SoftwareSerial mySerial(3, 2);

void setup()
{
  mySerial.begin(9600);
  delay(100);
}

unsigned int i;

void loop()
{
   //cammand : S + PWM + Duty_H + Duty_L + E
   for(i=100;i<450;i++)
   {
     //PWM 1
     mySerial.print('S');   //Start
     mySerial.print(char(1)); //PWM channel selection
     mySerial.print(char(i/0xFF)); //Duty HIGH
     mySerial.print(char(i%0xFF)); //Duty LOW
     mySerial.print('E'); //End

     //PWM 2
     mySerial.print('S');
     mySerial.print(char(2));
     mySerial.print(char(i/0xFF));
     mySerial.print(char(i%0xFF));
     mySerial.print('E');
     delay(5);
   }

    for(i=450;i>100;i--)
   {
     mySerial.print('S');
     mySerial.print(char(1));
     mySerial.print(char(i/0xFF));
     mySerial.print(char(i%0xFF));
     mySerial.print('E');
     mySerial.print('S');
     mySerial.print(char(2));
     mySerial.print(char(i/0xFF));
     mySerial.print(char(i%0xFF));
     mySerial.print('E');
     delay(5);
   }
}